diff --git a/src/mainwindow.cpp b/src/mainwindow.cpp
--- a/src/mainwindow.cpp
+++ b/src/mainwindow.cpp
@@ -933,8 +933,13 @@
 {
     Core::readProperties(config);
 
+#if QT_VERSION < QT_VERSION_CHECK(5, 14, 0)
     QSet<QString> activePlugins
         = QSet<QString>::fromList(config.readEntry("ActivePlugins", QStringList()));
+#else
+    const auto activePluginList = config.readEntry("ActivePlugins", QStringList());
+    QSet<QString> activePlugins(activePluginList.begin(), activePluginList.end());
+#endif
 
     if (!activePlugins.isEmpty()) {
         for (KontactInterface::Plugin *plugin : qAsConst(mPlugins)) {