diff --git a/CMakeLists.txt b/CMakeLists.txt
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -11,7 +11,7 @@
 
 set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} ${CMAKE_CURRENT_SOURCE_DIR}/cmake ${ECM_MODULE_PATH} ${ECM_KDE_MODULE_DIR})
 
-find_package(NetworkManager 1.0.0 REQUIRED)
+find_package(NetworkManager 1.4.0 REQUIRED)
 
 include(KDEInstallDirs)
 include(KDEFrameworkCompilerSettings NO_POLICY_SCOPE)
diff --git a/autotests/settings/8021xsettingtest.cpp b/autotests/settings/8021xsettingtest.cpp
--- a/autotests/settings/8021xsettingtest.cpp
+++ b/autotests/settings/8021xsettingtest.cpp
@@ -24,10 +24,6 @@
 
 #include <libnm/NetworkManager.h>
 
-#if !NM_CHECK_VERSION(1, 2, 0)
-#define NM_SETTING_802_1X_DOMAIN_SUFFIX_MATCH "domain-suffix-match"
-#endif
-
 #include <QTest>
 
 void Security8021xSettingTest::testSetting_data()
diff --git a/autotests/settings/bridgesettingtest.cpp b/autotests/settings/bridgesettingtest.cpp
--- a/autotests/settings/bridgesettingtest.cpp
+++ b/autotests/settings/bridgesettingtest.cpp
@@ -24,10 +24,6 @@
 
 #include <libnm/NetworkManager.h>
 
-#if !NM_CHECK_VERSION(1, 2, 0)
-#define NM_SETTING_BRIDGE_MULTICAST_SNOOPING "multicast-snooping"
-#endif
-
 #include <QTest>
 
 void BridgeSettingTest::testSetting_data()
diff --git a/autotests/settings/connectionsettingtest.cpp b/autotests/settings/connectionsettingtest.cpp
--- a/autotests/settings/connectionsettingtest.cpp
+++ b/autotests/settings/connectionsettingtest.cpp
@@ -24,19 +24,6 @@
 
 #include <libnm/NetworkManager.h>
 
-#if !NM_CHECK_VERSION(1, 0, 6)
-#define NM_SETTING_CONNECTION_METERED "metered"
-#endif
-
-#if !NM_CHECK_VERSION(1, 2, 0)
-#define NM_SETTING_TUN_SETTING_NAME "tun"
-#define NM_SETTING_CONNECTION_LLDP "lldp"
-#endif
-
-#if !NM_CHECK_VERSION(1, 4, 0)
-#define NM_SETTING_CONNECTION_STABLE_ID "stable-id"
-#endif
-
 #if !NM_CHECK_VERSION(1, 6, 0)
 #define NM_SETTING_CONNECTION_AUTOCONNECT_RETRIES "autoconnect-retries"
 #endif
diff --git a/autotests/settings/gsmsettingtest.cpp b/autotests/settings/gsmsettingtest.cpp
--- a/autotests/settings/gsmsettingtest.cpp
+++ b/autotests/settings/gsmsettingtest.cpp
@@ -24,12 +24,6 @@
 
 #include <libnm/NetworkManager.h>
 
-#if !NM_CHECK_VERSION(1, 2, 0)
-#define NM_SETTING_GSM_DEVICE_ID "device-id"
-#define NM_SETTING_GSM_SIM_ID "sim-id"
-#define NM_SETTING_GSM_SIM_OPERATOR_ID "sim-operator-id"
-#endif
-
 #include <QTest>
 
 void GsmSettingTest::testSetting_data()
diff --git a/autotests/settings/vpnsettingtest.cpp b/autotests/settings/vpnsettingtest.cpp
--- a/autotests/settings/vpnsettingtest.cpp
+++ b/autotests/settings/vpnsettingtest.cpp
@@ -24,11 +24,6 @@
 
 #include <libnm/NetworkManager.h>
 
-#if !NM_CHECK_VERSION(1, 2, 0)
-#define NM_SETTING_VPN_PERSISTENT "persistent"
-#define NM_SETTING_VPN_TIMEOUT "timeout"
-#endif
-
 #include <QTest>
 
 void VpnSettingTest::testSetting_data()
diff --git a/autotests/settings/wiredsettingtest.cpp b/autotests/settings/wiredsettingtest.cpp
--- a/autotests/settings/wiredsettingtest.cpp
+++ b/autotests/settings/wiredsettingtest.cpp
@@ -25,15 +25,6 @@
 
 #include <libnm/NetworkManager.h>
 
-#if !NM_CHECK_VERSION(1, 0, 6)
-#define NM_SETTING_WIRED_WAKE_ON_LAN "wake-on-lan"
-#define NM_SETTING_WIRED_WAKE_ON_LAN_PASSWORD "wake-on-lan-password"
-#endif
-
-#if !NM_CHECK_VERSION(1, 4, 0)
-#define NM_SETTING_WIRED_GENERATE_MAC_ADDRESS_MASK "generate-mac-address-mask"
-#endif
-
 #include <QTest>
 
 void WiredSettingTest::testSetting_data()
diff --git a/autotests/settings/wirelesssettingtest.cpp b/autotests/settings/wirelesssettingtest.cpp
--- a/autotests/settings/wirelesssettingtest.cpp
+++ b/autotests/settings/wirelesssettingtest.cpp
@@ -26,16 +26,6 @@
 
 #define NM_SETTING_WIRELESS_ASSIGNED_MAC_ADDRESS "assigned-mac-address"
 
-#if !NM_CHECK_VERSION(1, 2, 0)
-#define NM_SETTING_WIRELESS_MAC_ADDRESS_RANDOMIZATION "mac-address-randomization"
-#define NM_SETTING_WIRELESS_POWERSAVE "powersave"
-#endif
-
-#if !NM_CHECK_VERSION(1, 4, 0)
-#define NM_SETTING_WIRELESS_GENERATE_MAC_ADDRESS_MASK "generate-mac-address-mask"
-#endif
-
-
 #include <QTest>
 
 void WirelessSettingTest::testSetting_data()
diff --git a/src/accesspoint.cpp b/src/accesspoint.cpp
--- a/src/accesspoint.cpp
+++ b/src/accesspoint.cpp
@@ -72,12 +72,8 @@
         d->propertiesChanged(initialProperties);
     }
 
-#if NM_CHECK_VERSION(1, 4, 0)
     QDBusConnection::systemBus().connect(NetworkManagerPrivate::DBUS_SERVICE, d->uni, NetworkManagerPrivate::FDO_DBUS_PROPERTIES,
                                          QLatin1String("PropertiesChanged"), d, SLOT(dbusPropertiesChanged(QString,QVariantMap,QStringList)));
-#else
-    QObject::connect(&d->iface, &OrgFreedesktopNetworkManagerAccessPointInterface::PropertiesChanged, d, &AccessPointPrivate::propertiesChanged);
-#endif
 }
 
 NetworkManager::AccessPoint::~AccessPoint()
diff --git a/src/activeconnection.cpp b/src/activeconnection.cpp
--- a/src/activeconnection.cpp
+++ b/src/activeconnection.cpp
@@ -67,12 +67,8 @@
     }
 
 #ifndef NMQT_STATIC
-#if NM_CHECK_VERSION(1, 4, 0)
     QDBusConnection::systemBus().connect(NetworkManagerPrivate::DBUS_SERVICE, d->path, NetworkManagerPrivate::FDO_DBUS_PROPERTIES,
                                          QLatin1String("PropertiesChanged"), d, SLOT(dbusPropertiesChanged(QString,QVariantMap,QStringList)));
-#else
-    connect(&d->iface, &OrgFreedesktopNetworkManagerConnectionActiveInterface::PropertiesChanged, d, &ActiveConnectionPrivate::propertiesChanged);
-#endif
 #endif
 
 #ifdef NMQT_STATIC
@@ -94,12 +90,8 @@
     Q_D(ActiveConnection);
 
 #ifndef NMQT_STATIC
-#if NM_CHECK_VERSION(1, 4, 0)
     QDBusConnection::systemBus().connect(NetworkManagerPrivate::DBUS_SERVICE, d->path, NetworkManagerPrivate::FDO_DBUS_PROPERTIES,
                                          QLatin1String("PropertiesChanged"), d, SLOT(dbusPropertiesChanged(QString,QVariantMap,QStringList)));
-#else
-    connect(&d->iface, &OrgFreedesktopNetworkManagerConnectionActiveInterface::PropertiesChanged, d, &ActiveConnectionPrivate::propertiesChanged);
-#endif
 #endif
 
 #ifdef NMQT_STATIC
diff --git a/src/adsldevice.cpp b/src/adsldevice.cpp
--- a/src/adsldevice.cpp
+++ b/src/adsldevice.cpp
@@ -46,12 +46,8 @@
         d->propertiesChanged(initialProperties);
     }
 
-#if NM_CHECK_VERSION(1, 4, 0)
     QDBusConnection::systemBus().connect(NetworkManagerPrivate::DBUS_SERVICE, d->uni, NetworkManagerPrivate::FDO_DBUS_PROPERTIES,
                                          QLatin1String("PropertiesChanged"), d, SLOT(dbusPropertiesChanged(QString,QVariantMap,QStringList)));
-#else
-    connect(&d->iface, &OrgFreedesktopNetworkManagerDeviceAdslInterface::PropertiesChanged, d, &AdslDevicePrivate::propertiesChanged);
-#endif
 }
 
 NetworkManager::AdslDevicePrivate::~AdslDevicePrivate()
diff --git a/src/bluetoothdevice.cpp b/src/bluetoothdevice.cpp
--- a/src/bluetoothdevice.cpp
+++ b/src/bluetoothdevice.cpp
@@ -45,12 +45,8 @@
         d->propertiesChanged(initialProperties);
     }
 
-#if NM_CHECK_VERSION(1, 4, 0)
     QDBusConnection::systemBus().connect(NetworkManagerPrivate::DBUS_SERVICE, d->uni, NetworkManagerPrivate::FDO_DBUS_PROPERTIES,
                                          QLatin1String("PropertiesChanged"), d, SLOT(dbusPropertiesChanged(QString,QVariantMap,QStringList)));
-#else
-    connect(&d->btIface, &OrgFreedesktopNetworkManagerDeviceBluetoothInterface::PropertiesChanged, d, &BluetoothDevicePrivate::propertiesChanged);
-#endif
 }
 
 NetworkManager::BluetoothDevice::~BluetoothDevice()
diff --git a/src/bonddevice.cpp b/src/bonddevice.cpp
--- a/src/bonddevice.cpp
+++ b/src/bonddevice.cpp
@@ -48,12 +48,8 @@
         d->propertiesChanged(initialProperties);
     }
 
-#if NM_CHECK_VERSION(1, 4, 0)
     QDBusConnection::systemBus().connect(NetworkManagerPrivate::DBUS_SERVICE, d->uni, NetworkManagerPrivate::FDO_DBUS_PROPERTIES,
                                          QLatin1String("PropertiesChanged"), d, SLOT(dbusPropertiesChanged(QString,QVariantMap,QStringList)));
-#else
-    connect(&d->iface, &OrgFreedesktopNetworkManagerDeviceBondInterface::PropertiesChanged, d, &BondDevicePrivate::propertiesChanged);
-#endif
 }
 
 NetworkManager::BondDevicePrivate::~BondDevicePrivate()
diff --git a/src/bridgedevice.cpp b/src/bridgedevice.cpp
--- a/src/bridgedevice.cpp
+++ b/src/bridgedevice.cpp
@@ -46,12 +46,8 @@
         d->propertiesChanged(initialProperties);
     }
 
-#if NM_CHECK_VERSION(1, 4, 0)
     QDBusConnection::systemBus().connect(NetworkManagerPrivate::DBUS_SERVICE, d->uni, NetworkManagerPrivate::FDO_DBUS_PROPERTIES,
                                          QLatin1String("PropertiesChanged"), d, SLOT(dbusPropertiesChanged(QString,QVariantMap,QStringList)));
-#else
-    connect(&d->iface, &OrgFreedesktopNetworkManagerDeviceBridgeInterface::PropertiesChanged, d, &BridgeDevicePrivate::propertiesChanged);
-#endif
 }
 
 NetworkManager::BridgeDevice::~BridgeDevice()
diff --git a/src/connection.cpp b/src/connection.cpp
--- a/src/connection.cpp
+++ b/src/connection.cpp
@@ -61,12 +61,9 @@
     connect(&d->iface, &OrgFreedesktopNetworkManagerSettingsConnectionInterface::Updated, d, &ConnectionPrivate::onConnectionUpdated);
     connect(&d->iface, &OrgFreedesktopNetworkManagerSettingsConnectionInterface::Removed, d, &ConnectionPrivate::onConnectionRemoved);
     d->unsaved = d->iface.unsaved();
-#if NM_CHECK_VERSION(1, 4, 0)
+
     QDBusConnection::systemBus().connect(NetworkManagerPrivate::DBUS_SERVICE, d->path, NetworkManagerPrivate::FDO_DBUS_PROPERTIES,
                                          QLatin1String("PropertiesChanged"), d, SLOT(dbusPropertiesChanged(QString,QVariantMap,QStringList)));
-#else
-    connect(&d->iface, &OrgFreedesktopNetworkManagerSettingsConnectionInterface::PropertiesChanged, d, &ConnectionPrivate::onPropertiesChanged);
-#endif
 }
 
 NetworkManager::Connection::~Connection()
diff --git a/src/devicestatistics.cpp b/src/devicestatistics.cpp
--- a/src/devicestatistics.cpp
+++ b/src/devicestatistics.cpp
@@ -48,12 +48,8 @@
         d->propertiesChanged(initialProperties);
     }
 
-#if NM_CHECK_VERSION(1, 4, 0)
     QDBusConnection::systemBus().connect(NetworkManagerPrivate::DBUS_SERVICE, d->uni, NetworkManagerPrivate::FDO_DBUS_PROPERTIES,
                                          QLatin1String("PropertiesChanged"), d, SLOT(dbusPropertiesChanged(QString,QVariantMap,QStringList)));
-#else
-    QObject::connect(&d->iface, &OrgFreedesktopNetworkManagerDeviceStatisticsInterface::PropertiesChanged, d, &DeviceStatisticsPrivate::propertiesChanged);
-#endif
 }
 
 NetworkManager::DeviceStatistics::~DeviceStatistics()
diff --git a/src/dhcp4config.cpp b/src/dhcp4config.cpp
--- a/src/dhcp4config.cpp
+++ b/src/dhcp4config.cpp
@@ -44,12 +44,9 @@
 {
     Q_D(Dhcp4Config);
     Q_UNUSED(owner);
-#if NM_CHECK_VERSION(1, 4, 0)
+
     QDBusConnection::systemBus().connect(NetworkManagerPrivate::DBUS_SERVICE, d->myPath, NetworkManagerPrivate::FDO_DBUS_PROPERTIES,
                                          QLatin1String("PropertiesChanged"), d, SLOT(dbusPropertiesChanged(QString,QVariantMap,QStringList)));
-#else
-    connect(&d->dhcp4Iface, &OrgFreedesktopNetworkManagerDHCP4ConfigInterface::PropertiesChanged, d, &Dhcp4ConfigPrivate::dhcp4PropertiesChanged);
-#endif
     d->options = d->dhcp4Iface.options();
 }
 
diff --git a/src/dhcp6config.cpp b/src/dhcp6config.cpp
--- a/src/dhcp6config.cpp
+++ b/src/dhcp6config.cpp
@@ -43,12 +43,10 @@
 {
     Q_D(Dhcp6Config);
     Q_UNUSED(owner);
-#if NM_CHECK_VERSION(1, 4, 0)
+
     QDBusConnection::systemBus().connect(NetworkManagerPrivate::DBUS_SERVICE, d->path, NetworkManagerPrivate::FDO_DBUS_PROPERTIES,
                                          QLatin1String("PropertiesChanged"), d, SLOT(dbusPropertiesChanged(QString,QVariantMap,QStringList)));
-#else
-    connect(&d->dhcp6Iface, &OrgFreedesktopNetworkManagerDHCP6ConfigInterface::PropertiesChanged, d, &Dhcp6ConfigPrivate::dhcp6PropertiesChanged);
-#endif
+
     d->options = d->dhcp6Iface.options();
 }
 
diff --git a/src/genericdevice.cpp b/src/genericdevice.cpp
--- a/src/genericdevice.cpp
+++ b/src/genericdevice.cpp
@@ -46,12 +46,8 @@
         d->propertiesChanged(initialProperties);
     }
 
-#if NM_CHECK_VERSION(1, 4, 0)
     QDBusConnection::systemBus().connect(NetworkManagerPrivate::DBUS_SERVICE, d->uni, NetworkManagerPrivate::FDO_DBUS_PROPERTIES,
                                          QLatin1String("PropertiesChanged"), d, SLOT(dbusPropertiesChanged(QString,QVariantMap,QStringList)));
-#else
-    connect(&d->iface, &OrgFreedesktopNetworkManagerDeviceGenericInterface::PropertiesChanged, d, &GenericDevicePrivate::propertiesChanged);
-#endif
 }
 
 NetworkManager::GenericDevice::~GenericDevice()
diff --git a/src/gredevice.cpp b/src/gredevice.cpp
--- a/src/gredevice.cpp
+++ b/src/gredevice.cpp
@@ -47,12 +47,8 @@
         d->propertiesChanged(initialProperties);
     }
 
-#if NM_CHECK_VERSION(1, 4, 0)
     QDBusConnection::systemBus().connect(NetworkManagerPrivate::DBUS_SERVICE, d->uni, NetworkManagerPrivate::FDO_DBUS_PROPERTIES,
                                          QLatin1String("PropertiesChanged"), d, SLOT(dbusPropertiesChanged(QString,QVariantMap,QStringList)));
-#else
-    QObject::connect(&d->iface, &OrgFreedesktopNetworkManagerDeviceGreInterface::PropertiesChanged, d, &GreDevicePrivate::propertiesChanged);
-#endif
 }
 
 NetworkManager::GreDevice::~GreDevice()
diff --git a/src/infinibanddevice.cpp b/src/infinibanddevice.cpp
--- a/src/infinibanddevice.cpp
+++ b/src/infinibanddevice.cpp
@@ -48,12 +48,8 @@
         d->propertiesChanged(initialProperties);
     }
 
-#if NM_CHECK_VERSION(1, 4, 0)
     QDBusConnection::systemBus().connect(NetworkManagerPrivate::DBUS_SERVICE, d->uni, NetworkManagerPrivate::FDO_DBUS_PROPERTIES,
                                          QLatin1String("PropertiesChanged"), d, SLOT(dbusPropertiesChanged(QString,QVariantMap,QStringList)));
-#else
-    connect(&d->iface, &OrgFreedesktopNetworkManagerDeviceInfinibandInterface::PropertiesChanged, d, &InfinibandDevicePrivate::propertiesChanged);
-#endif
 }
 
 NetworkManager::InfinibandDevicePrivate::~InfinibandDevicePrivate()
diff --git a/src/iptunneldevice.cpp b/src/iptunneldevice.cpp
--- a/src/iptunneldevice.cpp
+++ b/src/iptunneldevice.cpp
@@ -46,12 +46,8 @@
         d->propertiesChanged(initialProperties);
     }
 
-#if NM_CHECK_VERSION(1, 4, 0)
     QDBusConnection::systemBus().connect(NetworkManagerPrivate::DBUS_SERVICE, d->uni, NetworkManagerPrivate::FDO_DBUS_PROPERTIES,
                                          QLatin1String("PropertiesChanged"), d, SLOT(dbusPropertiesChanged(QString,QVariantMap,QStringList)));
-#else
-    QObject::connect(&d->iface, &OrgFreedesktopNetworkManagerDeviceIPTunnelInterface::PropertiesChanged, d, &IpTunnelDevicePrivate::propertiesChanged);
-#endif
 }
 
 NetworkManager::IpTunnelDevice::~IpTunnelDevice()
diff --git a/src/macvlandevice.cpp b/src/macvlandevice.cpp
--- a/src/macvlandevice.cpp
+++ b/src/macvlandevice.cpp
@@ -46,12 +46,8 @@
         d->propertiesChanged(initialProperties);
     }
 
-#if NM_CHECK_VERSION(1, 4, 0)
     QDBusConnection::systemBus().connect(NetworkManagerPrivate::DBUS_SERVICE, d->uni, NetworkManagerPrivate::FDO_DBUS_PROPERTIES,
                                          QLatin1String("PropertiesChanged"), d, SLOT(dbusPropertiesChanged(QString,QVariantMap,QStringList)));
-#else
-    connect(&d->iface, &OrgFreedesktopNetworkManagerDeviceMacvlanInterface::PropertiesChanged, d, &MacVlanDevicePrivate::propertiesChanged);
-#endif
 }
 
 NetworkManager::MacVlanDevice::~MacVlanDevice()
diff --git a/src/manager.cpp b/src/manager.cpp
--- a/src/manager.cpp
+++ b/src/manager.cpp
@@ -96,13 +96,8 @@
 
 
 #ifndef NMQT_STATIC
-#if NM_CHECK_VERSION(1, 4, 0)
     QDBusConnection::systemBus().connect(NetworkManagerPrivate::DBUS_SERVICE, NetworkManagerPrivate::DBUS_DAEMON_PATH, NetworkManagerPrivate::FDO_DBUS_PROPERTIES,
                                          QLatin1String("PropertiesChanged"), this, SLOT(dbusPropertiesChanged(QString,QVariantMap,QStringList)));
-#else
-    connect(&iface, &OrgFreedesktopNetworkManagerInterface::PropertiesChanged,
-            this, &NetworkManagerPrivate::propertiesChanged);
-#endif
 #endif
 
 #ifdef NMQT_STATIC
diff --git a/src/modemdevice.cpp b/src/modemdevice.cpp
--- a/src/modemdevice.cpp
+++ b/src/modemdevice.cpp
@@ -53,25 +53,17 @@
         d->propertiesChanged(initialProperties);
     }
 
-#if NM_CHECK_VERSION(1, 4, 0)
     QDBusConnection::systemBus().connect(NetworkManagerPrivate::DBUS_SERVICE, d->uni, NetworkManagerPrivate::FDO_DBUS_PROPERTIES,
                                          QLatin1String("PropertiesChanged"), d, SLOT(dbusPropertiesChanged(QString,QVariantMap,QStringList)));
-#else
-    QObject::connect(&d->modemIface, &OrgFreedesktopNetworkManagerDeviceModemInterface::PropertiesChanged, d, &ModemDevicePrivate::propertiesChanged);
-#endif
 }
 
 NetworkManager::ModemDevice::ModemDevice(NetworkManager::ModemDevicePrivate &dd, QObject *parent)
     : Device(dd, parent)
 {
     Q_D(ModemDevice);
 
-#if NM_CHECK_VERSION(1, 4, 0)
     QDBusConnection::systemBus().connect(NetworkManagerPrivate::DBUS_SERVICE, d->uni, NetworkManagerPrivate::FDO_DBUS_PROPERTIES,
                                          QLatin1String("PropertiesChanged"), d, SLOT(dbusPropertiesChanged(QString,QVariantMap,QStringList)));
-#else
-    QObject::connect(&d->modemIface, &OrgFreedesktopNetworkManagerDeviceModemInterface::PropertiesChanged, d, &ModemDevicePrivate::propertiesChanged);
-#endif
 }
 
 NetworkManager::ModemDevice::~ModemDevice()
diff --git a/src/olpcmeshdevice.cpp b/src/olpcmeshdevice.cpp
--- a/src/olpcmeshdevice.cpp
+++ b/src/olpcmeshdevice.cpp
@@ -45,12 +45,8 @@
         d->propertiesChanged(initialProperties);
     }
 
-#if NM_CHECK_VERSION(1, 4, 0)
     QDBusConnection::systemBus().connect(NetworkManagerPrivate::DBUS_SERVICE, d->uni, NetworkManagerPrivate::FDO_DBUS_PROPERTIES,
                                          QLatin1String("PropertiesChanged"), d, SLOT(dbusPropertiesChanged(QString,QVariantMap,QStringList)));
-#else
-    QObject::connect(&d->iface, &OrgFreedesktopNetworkManagerDeviceOlpcMeshInterface::PropertiesChanged, d, &OlpcMeshDevicePrivate::propertiesChanged);
-#endif
 }
 
 NetworkManager::OlpcMeshDevice::~OlpcMeshDevice()
diff --git a/src/settings.cpp b/src/settings.cpp
--- a/src/settings.cpp
+++ b/src/settings.cpp
@@ -42,13 +42,8 @@
 #endif
     , m_canModify(true)
 {
-#if NM_CHECK_VERSION(1, 4, 0)
     QDBusConnection::systemBus().connect(NetworkManagerPrivate::DBUS_SERVICE, NetworkManagerPrivate::DBUS_SETTINGS_PATH, NetworkManagerPrivate::FDO_DBUS_PROPERTIES,
                                          QLatin1String("PropertiesChanged"), this, SLOT(dbusPropertiesChanged(QString,QVariantMap,QStringList)));
-#else
-    connect(&iface, &OrgFreedesktopNetworkManagerSettingsInterface::PropertiesChanged,
-            this, &SettingsPrivate::propertiesChanged);
-#endif
     connect(&iface, &OrgFreedesktopNetworkManagerSettingsInterface::NewConnection,
             this, &SettingsPrivate::onConnectionAdded);
     connect(&iface, &OrgFreedesktopNetworkManagerSettingsInterface::ConnectionRemoved,
diff --git a/src/settings/bridgesetting.cpp b/src/settings/bridgesetting.cpp
--- a/src/settings/bridgesetting.cpp
+++ b/src/settings/bridgesetting.cpp
@@ -23,10 +23,6 @@
 
 #define NM_SETTING_BRIDGE_INTERFACE_NAME "interface-name"
 
-#if !NM_CHECK_VERSION(1, 2, 0)
-#define NM_SETTING_BRIDGE_MULTICAST_SNOOPING "multicast-snooping"
-#endif
-
 #include <QtCore/QDebug>
 
 NetworkManager::BridgeSettingPrivate::BridgeSettingPrivate()
diff --git a/src/settings/connectionsettings.cpp b/src/settings/connectionsettings.cpp
--- a/src/settings/connectionsettings.cpp
+++ b/src/settings/connectionsettings.cpp
@@ -48,19 +48,6 @@
 #undef signals
 #include <libnm/NetworkManager.h>
 
-#if !NM_CHECK_VERSION(1, 0, 6)
-#define NM_SETTING_CONNECTION_METERED "metered"
-#endif
-
-#if !NM_CHECK_VERSION(1, 2, 0)
-#define NM_SETTING_TUN_SETTING_NAME "tun"
-#define NM_SETTING_CONNECTION_LLDP "lldp"
-#endif
-
-#if !NM_CHECK_VERSION(1, 4, 0)
-#define NM_SETTING_CONNECTION_STABLE_ID "stable-id"
-#endif
-
 #if !NM_CHECK_VERSION(1, 6, 0)
 #define NM_SETTING_CONNECTION_AUTOCONNECT_RETRIES "autoconnect-retries"
 #endif
diff --git a/src/settings/gsmsetting.cpp b/src/settings/gsmsetting.cpp
--- a/src/settings/gsmsetting.cpp
+++ b/src/settings/gsmsetting.cpp
@@ -24,12 +24,6 @@
 #define NM_SETTING_GSM_NETWORK_TYPE "network-type"
 #define NM_SETTING_GSM_ALLOWED_BANDS "allowed-bands"
 
-#if !NM_CHECK_VERSION(1, 2, 0)
-#define NM_SETTING_GSM_DEVICE_ID "device-id"
-#define NM_SETTING_GSM_SIM_ID "sim-id"
-#define NM_SETTING_GSM_SIM_OPERATOR_ID "sim-operator-id"
-#endif
-
 #include <QtCore/QDebug>
 
 NetworkManager::GsmSettingPrivate::GsmSettingPrivate()
diff --git a/src/settings/security8021xsetting.cpp b/src/settings/security8021xsetting.cpp
--- a/src/settings/security8021xsetting.cpp
+++ b/src/settings/security8021xsetting.cpp
@@ -21,10 +21,6 @@
 #include "security8021xsetting.h"
 #include "security8021xsetting_p.h"
 
-#if !NM_CHECK_VERSION(1, 2, 0)
-#define NM_SETTING_802_1X_DOMAIN_SUFFIX_MATCH "domain-suffix-match"
-#endif
-
 #include <QtCore/QDebug>
 
 NetworkManager::Security8021xSettingPrivate::Security8021xSettingPrivate()
diff --git a/src/settings/tunsetting.cpp b/src/settings/tunsetting.cpp
--- a/src/settings/tunsetting.cpp
+++ b/src/settings/tunsetting.cpp
@@ -21,17 +21,6 @@
 #include "tunsetting.h"
 #include "tunsetting_p.h"
 
-#if !NM_CHECK_VERSION(1, 1, 92)
-#define NM_SETTING_TUN_SETTING_NAME         "tun"
-
-#define NM_SETTING_TUN_MODE                 "mode"
-#define NM_SETTING_TUN_OWNER                "owner"
-#define NM_SETTING_TUN_GROUP                "group"
-#define NM_SETTING_TUN_PI                   "pi"
-#define NM_SETTING_TUN_VNET_HDR             "vnet-hdr"
-#define NM_SETTING_TUN_MULTI_QUEUE          "multi-queue"
-#endif
-
 #include <QtCore/QDebug>
 
 NetworkManager::TunSettingPrivate::TunSettingPrivate()
diff --git a/src/settings/vpnsetting.cpp b/src/settings/vpnsetting.cpp
--- a/src/settings/vpnsetting.cpp
+++ b/src/settings/vpnsetting.cpp
@@ -22,11 +22,6 @@
 #include "vpnsetting_p.h"
 #include "nmdebug.h"
 
-#if !NM_CHECK_VERSION(1, 2, 0)
-#define NM_SETTING_VPN_PERSISTENT "persistent"
-#define NM_SETTING_VPN_TIMEOUT "timeout"
-#endif
-
 NetworkManager::VpnSettingPrivate::VpnSettingPrivate()
     : name(NM_SETTING_VPN_SETTING_NAME)
     , persistent(false)
diff --git a/src/settings/wiredsetting.cpp b/src/settings/wiredsetting.cpp
--- a/src/settings/wiredsetting.cpp
+++ b/src/settings/wiredsetting.cpp
@@ -22,15 +22,6 @@
 #include "wiredsetting_p.h"
 #include "manager.h"
 
-#if !NM_CHECK_VERSION(1, 0, 6)
-#define NM_SETTING_WIRED_WAKE_ON_LAN "wake-on-lan"
-#define NM_SETTING_WIRED_WAKE_ON_LAN_PASSWORD "wake-on-lan-password"
-#endif
-
-#if !NM_CHECK_VERSION(1, 4, 0)
-#define NM_SETTING_WIRED_GENERATE_MAC_ADDRESS_MASK "generate-mac-address-mask"
-#endif
-
 #include <QtCore/QDebug>
 
 NetworkManager::WiredSettingPrivate::WiredSettingPrivate()
diff --git a/src/settings/wirelesssetting.cpp b/src/settings/wirelesssetting.cpp
--- a/src/settings/wirelesssetting.cpp
+++ b/src/settings/wirelesssetting.cpp
@@ -27,15 +27,6 @@
 #define NM_SETTING_WIRELESS_SEC "security"
 #define NM_SETTING_WIRELESS_ASSIGNED_MAC_ADDRESS "assigned-mac-address"
 
-#if !NM_CHECK_VERSION(1, 2, 0)
-#define NM_SETTING_WIRELESS_MAC_ADDRESS_RANDOMIZATION "mac-address-randomization"
-#define NM_SETTING_WIRELESS_POWERSAVE "powersave"
-#endif
-
-#if !NM_CHECK_VERSION(1, 4, 0)
-#define NM_SETTING_WIRELESS_GENERATE_MAC_ADDRESS_MASK "generate-mac-address-mask"
-#endif
-
 #include <QtCore/QDebug>
 
 NetworkManager::WirelessSettingPrivate::WirelessSettingPrivate()
diff --git a/src/teamdevice.cpp b/src/teamdevice.cpp
--- a/src/teamdevice.cpp
+++ b/src/teamdevice.cpp
@@ -48,12 +48,8 @@
         d->propertiesChanged(initialProperties);
     }
 
-#if NM_CHECK_VERSION(1, 4, 0)
     QDBusConnection::systemBus().connect(NetworkManagerPrivate::DBUS_SERVICE, d->uni, NetworkManagerPrivate::FDO_DBUS_PROPERTIES,
                                          QLatin1String("PropertiesChanged"), d, SLOT(dbusPropertiesChanged(QString,QVariantMap,QStringList)));
-#else
-    connect(&d->iface, &OrgFreedesktopNetworkManagerDeviceTeamInterface::PropertiesChanged, d, &TeamDevicePrivate::propertiesChanged);
-#endif
 }
 
 NetworkManager::TeamDevice::~TeamDevice()
diff --git a/src/tundevice.cpp b/src/tundevice.cpp
--- a/src/tundevice.cpp
+++ b/src/tundevice.cpp
@@ -46,12 +46,8 @@
         d->propertiesChanged(initialProperties);
     }
 
-#if NM_CHECK_VERSION(1, 4, 0)
     QDBusConnection::systemBus().connect(NetworkManagerPrivate::DBUS_SERVICE, d->uni, NetworkManagerPrivate::FDO_DBUS_PROPERTIES,
                                          QLatin1String("PropertiesChanged"), d, SLOT(dbusPropertiesChanged(QString,QVariantMap,QStringList)));
-#else
-    connect(&d->iface, &OrgFreedesktopNetworkManagerDeviceTunInterface::PropertiesChanged, d, &TunDevicePrivate::propertiesChanged);
-#endif
 }
 
 NetworkManager::TunDevice::~TunDevice()
diff --git a/src/vethdevice.cpp b/src/vethdevice.cpp
--- a/src/vethdevice.cpp
+++ b/src/vethdevice.cpp
@@ -48,12 +48,8 @@
         d->propertiesChanged(initialProperties);
     }
 
-#if NM_CHECK_VERSION(1, 4, 0)
     QDBusConnection::systemBus().connect(NetworkManagerPrivate::DBUS_SERVICE, d->uni, NetworkManagerPrivate::FDO_DBUS_PROPERTIES,
                                          QLatin1String("PropertiesChanged"), d, SLOT(dbusPropertiesChanged(QString,QVariantMap,QStringList)));
-#else
-    connect(&d->iface, &OrgFreedesktopNetworkManagerDeviceVethInterface::PropertiesChanged, d, &VethDevicePrivate::propertiesChanged);
-#endif
 }
 
 NetworkManager::VethDevice::~VethDevice()
diff --git a/src/vlandevice.cpp b/src/vlandevice.cpp
--- a/src/vlandevice.cpp
+++ b/src/vlandevice.cpp
@@ -47,12 +47,8 @@
         d->propertiesChanged(initialProperties);
     }
 
-#if NM_CHECK_VERSION(1, 4, 0)
     QDBusConnection::systemBus().connect(NetworkManagerPrivate::DBUS_SERVICE, d->uni, NetworkManagerPrivate::FDO_DBUS_PROPERTIES,
                                          QLatin1String("PropertiesChanged"), d, SLOT(dbusPropertiesChanged(QString,QVariantMap,QStringList)));
-#else
-    connect(&d->iface, &OrgFreedesktopNetworkManagerDeviceVlanInterface::PropertiesChanged, d, &VlanDevicePrivate::propertiesChanged);
-#endif
 }
 
 NetworkManager::VlanDevicePrivate::~VlanDevicePrivate()
diff --git a/src/vpnconnection.cpp b/src/vpnconnection.cpp
--- a/src/vpnconnection.cpp
+++ b/src/vpnconnection.cpp
@@ -69,12 +69,8 @@
         }
     }
 
-#if NM_CHECK_VERSION(1, 4, 0)
     QDBusConnection::systemBus().connect(NetworkManagerPrivate::DBUS_SERVICE, d->path, NetworkManagerPrivate::FDO_DBUS_PROPERTIES,
                                          QLatin1String("PropertiesChanged"), d, SLOT(dbusPropertiesChanged(QString,QVariantMap,QStringList)));
-#else
-    connect(&d->iface, &OrgFreedesktopNetworkManagerVPNConnectionInterface::PropertiesChanged, d, &VpnConnectionPrivate::propertiesChanged);
-#endif
     connect(&d->iface, &OrgFreedesktopNetworkManagerVPNConnectionInterface::VpnStateChanged, d, &VpnConnectionPrivate::vpnStateChanged);
 }
 
diff --git a/src/wimaxdevice.cpp b/src/wimaxdevice.cpp
--- a/src/wimaxdevice.cpp
+++ b/src/wimaxdevice.cpp
@@ -52,12 +52,8 @@
         d->propertiesChanged(initialProperties);
     }
 
-#if NM_CHECK_VERSION(1, 4, 0)
     QDBusConnection::systemBus().connect(NetworkManagerPrivate::DBUS_SERVICE, d->uni, NetworkManagerPrivate::FDO_DBUS_PROPERTIES,
                                          QLatin1String("PropertiesChanged"), d, SLOT(dbusPropertiesChanged(QString,QVariantMap,QStringList)));
-#else
-    connect(&d->wimaxIface, &OrgFreedesktopNetworkManagerDeviceWiMaxInterface::PropertiesChanged, d, &WimaxDevicePrivate::propertiesChanged);
-#endif
     connect(&d->wimaxIface, &OrgFreedesktopNetworkManagerDeviceWiMaxInterface::NspAdded, d, &WimaxDevicePrivate::nspAdded);
     connect(&d->wimaxIface, &OrgFreedesktopNetworkManagerDeviceWiMaxInterface::NspRemoved, d, &WimaxDevicePrivate::nspRemoved);
 }
diff --git a/src/wireddevice.cpp b/src/wireddevice.cpp
--- a/src/wireddevice.cpp
+++ b/src/wireddevice.cpp
@@ -54,12 +54,8 @@
     }
 
 #ifndef NMQT_STATIC
-#if NM_CHECK_VERSION(1, 4, 0)
     QDBusConnection::systemBus().connect(NetworkManagerPrivate::DBUS_SERVICE, d->uni, NetworkManagerPrivate::FDO_DBUS_PROPERTIES,
                                          QLatin1String("PropertiesChanged"), d, SLOT(dbusPropertiesChanged(QString,QVariantMap,QStringList)));
-#else
-    connect(&d->wiredIface, &OrgFreedesktopNetworkManagerDeviceWiredInterface::PropertiesChanged, d, &WiredDevicePrivate::propertiesChanged);
-#endif
 #endif
 
 #ifdef NMQT_STATIC
diff --git a/src/wirelessdevice.cpp b/src/wirelessdevice.cpp
--- a/src/wirelessdevice.cpp
+++ b/src/wirelessdevice.cpp
@@ -64,12 +64,8 @@
     }
 
 #ifndef NMQT_STATIC
-#if NM_CHECK_VERSION(1, 4, 0)
     QDBusConnection::systemBus().connect(NetworkManagerPrivate::DBUS_SERVICE, d->uni, NetworkManagerPrivate::FDO_DBUS_PROPERTIES,
                                          QLatin1String("PropertiesChanged"), d, SLOT(dbusPropertiesChanged(QString,QVariantMap,QStringList)));
-#else
-    connect(&d->wirelessIface, &OrgFreedesktopNetworkManagerDeviceWirelessInterface::PropertiesChanged, d, &WirelessDevicePrivate::propertiesChanged);
-#endif
 #endif
 
 #ifdef NMQT_STATIC