diff --git a/libs/models/networkmodel.cpp b/libs/models/networkmodel.cpp
--- a/libs/models/networkmodel.cpp
+++ b/libs/models/networkmodel.cpp
@@ -278,7 +278,7 @@
                 }
                 item->setVpnState(state);
             }
-            item->updateDetails();
+            item->invalidateDetails();
             qCDebug(PLASMA_NM) << "Item " << item->name() << ": active connection state changed to " << item->connectionState();
         }
     }
@@ -382,7 +382,7 @@
             item->setSsid(QString::fromUtf8(wirelessSetting->ssid()));
         }
 
-        item->updateDetails();
+        item->invalidateDetails();
 
         const int index = m_list.count();
         beginInsertRows(QModelIndex(), index, index);
@@ -465,7 +465,7 @@
     item->setSsid(network->ssid());
     item->setType(NetworkManager::ConnectionSettings::Wireless);
     item->setSecurityType(securityType);
-    item->updateDetails();
+    item->invalidateDetails();
 
     const int index = m_list.count();
     beginInsertRows(QModelIndex(), index, index);
@@ -491,7 +491,7 @@
 
     if (createDuplicate) {
         NetworkModelItem *duplicatedItem = new NetworkModelItem(originalItem);
-        duplicatedItem->updateDetails();
+        duplicatedItem->invalidateDetails();
 
         const int index = m_list.count();
         beginInsertRows(QModelIndex(), index, index);
@@ -513,7 +513,7 @@
     const int row = m_list.indexOf(item);
 
     if (row >= 0) {
-        item->updateDetails();
+        item->invalidateDetails();
         QModelIndex index = createIndex(row, 0);
         Q_EMIT dataChanged(index, index);
     }
@@ -560,7 +560,7 @@
         beginResetModel();
         for (NetworkModelItem *item : m_list.returnItems(NetworkItemsList::ActiveConnection, activePtr->path())) {
             item->setConnectionState(state);
-            item->updateDetails();
+            item->invalidateDetails();
             qCDebug(PLASMA_NM) << "Item " << item->name() << ": active connection changed to " << item->connectionState();
         }
         endResetModel();
@@ -771,7 +771,7 @@
         beginResetModel();
         for (NetworkModelItem *item : m_list.returnItems(NetworkItemsList::Device, device->uni())) {
             item->setDeviceState(state);
-            item->updateDetails();
+            item->invalidateDetails();
 //             qCDebug(PLASMA_NM) << "Item " << item->name() << ": device state changed to " << item->deviceState();
         }
         endResetModel();
diff --git a/libs/models/networkmodelitem.h b/libs/models/networkmodelitem.h
--- a/libs/models/networkmodelitem.h
+++ b/libs/models/networkmodelitem.h
@@ -111,16 +111,19 @@
     bool operator==(const NetworkModelItem *item) const;
 
 public Q_SLOTS:
-    void updateDetails();
+    void invalidateDetails();
 
 private:
+    void updateDetails() const;
+
     QString m_activeConnectionPath;
     QString m_connectionPath;
     NetworkManager::ActiveConnection::State m_connectionState;
     QString m_devicePath;
     QString m_deviceName;
     NetworkManager::Device::State m_deviceState;
-    QStringList m_details;
+    mutable QStringList m_details;
+    mutable bool m_detailsValid;
     bool m_duplicate;
     NetworkManager::WirelessSetting::NetworkMode m_mode;
     QString m_name;
diff --git a/libs/models/networkmodelitem.cpp b/libs/models/networkmodelitem.cpp
--- a/libs/models/networkmodelitem.cpp
+++ b/libs/models/networkmodelitem.cpp
@@ -54,6 +54,7 @@
     : QObject(parent)
     , m_connectionState(NetworkManager::ActiveConnection::Deactivated)
     , m_deviceState(NetworkManager::Device::UnknownState)
+    , m_detailsValid(false)
     , m_duplicate(false)
     , m_mode(NetworkManager::WirelessSetting::Infrastructure)
     , m_securityType(NetworkManager::NoneSecurity)
@@ -68,6 +69,7 @@
     : QObject(parent)
     , m_connectionPath(item->connectionPath())
     , m_connectionState(NetworkManager::ActiveConnection::Deactivated)
+    , m_detailsValid(false)
     , m_duplicate(true)
     , m_mode(item->mode())
     , m_name(item->name())
@@ -117,6 +119,9 @@
 
 QStringList NetworkModelItem::details() const
 {
+    if (!m_detailsValid) {
+        updateDetails();
+    }
     return m_details;
 }
 
@@ -418,8 +423,14 @@
     return false;
 }
 
-void NetworkModelItem::updateDetails()
+void NetworkModelItem::invalidateDetails()
+{
+    m_detailsValid = false;
+}
+
+void NetworkModelItem::updateDetails() const
 {
+    m_detailsValid = true;
     m_details.clear();
 
     if (itemType() == NetworkModelItem::UnavailableConnection) {