diff --git a/daemon/powerdevilapp.cpp b/daemon/powerdevilapp.cpp
--- a/daemon/powerdevilapp.cpp
+++ b/daemon/powerdevilapp.cpp
@@ -33,6 +33,7 @@
 #include <QFileInfo>
 #include <QAction>
 #include <QKeySequence>
+#include <QSessionManager>
 
 #include <KCrash>
 #include <KDBusService>
@@ -200,6 +201,12 @@
     KWorkSpace::detectPlatform(argc, argv);
     PowerDevilApp app(argc, argv);
 
+    auto disableSessionManagement = [](QSessionManager &sm) {
+        sm.setRestartHint(QSessionManager::RestartNever);
+    };
+    QObject::connect(&app, &QGuiApplication::commitDataRequest, disableSessionManagement);
+    QObject::connect(&app, &QGuiApplication::saveStateRequest, disableSessionManagement);
+
     KDBusService service(KDBusService::Unique);
     KCrash::setFlags(KCrash::AutoRestart);