diff --git a/kcmkwin/kwincompositing/advanced.cpp b/kcmkwin/kwincompositing/advanced.cpp
index 0e297db874..78cca94125 100644
--- a/kcmkwin/kwincompositing/advanced.cpp
+++ b/kcmkwin/kwincompositing/advanced.cpp
@@ -28,6 +28,8 @@ KWinAdvancedCompositingOptions::KWinAdvancedCompositingOptions(QWidget* parent,
     ui.setupUi(mainWidget);
     setMainWidget(mainWidget);
 
+    connect(ui.compositingType, SIGNAL(currentIndexChanged(int)), this, SLOT(compositingModeChanged()));
+
     connect(ui.compositingType, SIGNAL(currentIndexChanged(int)), this, SLOT(changed()));
     connect(ui.glMode, SIGNAL(currentIndexChanged(int)), this, SLOT(changed()));
     connect(ui.glTextureFilter, SIGNAL(currentIndexChanged(int)), this, SLOT(changed()));
@@ -51,6 +53,11 @@ void KWinAdvancedCompositingOptions::changed()
     enableButtonApply(true);
 }
 
+void KWinAdvancedCompositingOptions::compositingModeChanged()
+{
+    ui.glGroup->setEnabled(ui.compositingType->currentIndex() == 0);
+}
+
 void KWinAdvancedCompositingOptions::load()
 {
     KConfigGroup config(mKWinConfig, "Compositing");
diff --git a/kcmkwin/kwincompositing/advanced.h b/kcmkwin/kwincompositing/advanced.h
index c2996ea54e..5775b5ac3d 100644
--- a/kcmkwin/kwincompositing/advanced.h
+++ b/kcmkwin/kwincompositing/advanced.h
@@ -32,6 +32,7 @@ class KWinAdvancedCompositingOptions : public KDialog
     public slots:
         void changed();
         void save();
+        void compositingModeChanged();
 
     signals:
         void configSaved();
diff --git a/kcmkwin/kwincompositing/advanced.ui b/kcmkwin/kwincompositing/advanced.ui
index 7eaaed8374..b72fb10b28 100644
--- a/kcmkwin/kwincompositing/advanced.ui
+++ b/kcmkwin/kwincompositing/advanced.ui
@@ -36,7 +36,7 @@
     </layout>
    </item>
    <item>
-    <widget class="QGroupBox" name="groupBox" >
+    <widget class="QGroupBox" name="glGroup" >
      <property name="title" >
       <string>OpenGL options</string>
      </property>