diff --git a/kcmkwin/kwincompositing/main.cpp b/kcmkwin/kwincompositing/main.cpp
index 34ecae139d..90655ad259 100644
--- a/kcmkwin/kwincompositing/main.cpp
+++ b/kcmkwin/kwincompositing/main.cpp
@@ -573,7 +573,10 @@ void KWinCompositingConfig::save()
 
     if (m_showConfirmDialog) {
         m_showConfirmDialog = false;
-        showConfirmDialog(advancedChanged);
+        if (advancedChanged)
+            QTimer::singleShot(1000, this, SLOT(confirmReInit()));
+        else
+            showConfirmDialog(false);
     }
 }
 
diff --git a/kcmkwin/kwincompositing/main.h b/kcmkwin/kwincompositing/main.h
index 94c62deea7..bd2950961f 100644
--- a/kcmkwin/kwincompositing/main.h
+++ b/kcmkwin/kwincompositing/main.h
@@ -75,6 +75,7 @@ public slots:
     void initEffectSelector();
 
 private slots:
+    void confirmReInit() { showConfirmDialog(true); }
     void rearmGlSupport();
     void suggestGraphicsSystem();
     void toogleSmoothScaleUi(int compositingType);