diff --git a/daemon/actions/bundled/wirelesspowersavingconfig.cpp b/daemon/actions/bundled/wirelesspowersavingconfig.cpp
--- a/daemon/actions/bundled/wirelesspowersavingconfig.cpp
+++ b/daemon/actions/bundled/wirelesspowersavingconfig.cpp
@@ -111,9 +111,14 @@
     retlist.append(qMakePair< QString, QWidget* >(i18n("Mobile broadband"), m_wwanCombobox));
     retlist.append(qMakePair< QString, QWidget* >(i18n("Bluetooth"), m_btCombobox));
 
-    connect(m_wifiCombobox, static_cast<void (QComboBox::*)(int)>(&QComboBox::currentIndexChanged), this, &WirelessPowerSavingConfig::setChanged);
-    connect(m_wwanCombobox, static_cast<void (QComboBox::*)(int)>(&QComboBox::currentIndexChanged), this, &WirelessPowerSavingConfig::setChanged);
-    connect(m_btCombobox, static_cast<void (QComboBox::*)(int)>(&QComboBox::currentIndexChanged), this, &WirelessPowerSavingConfig::setChanged);
+#if (QT_VERSION <= QT_VERSION_CHECK(5, 15, 0))
+    const auto comboIndexChanged = QOverload<int, const QString&>::of(&QComboBox::currentIndexChanged);
+#else
+    const auto comboIndexChanged = QOverload<int>::of(&QComboBox::currentIndexChanged);
+#endif
+    connect(m_wifiCombobox, comboIndexChanged, this, &WirelessPowerSavingConfig::setChanged);
+    connect(m_wwanCombobox, comboIndexChanged, this, &WirelessPowerSavingConfig::setChanged);
+    connect(m_btCombobox, comboIndexChanged, this, &WirelessPowerSavingConfig::setChanged);
 
     return retlist;
 }