diff --git a/effects/dialogparent.cpp b/effects/dialogparent.cpp
index 0025494736..cc663aa13c 100644
--- a/effects/dialogparent.cpp
+++ b/effects/dialogparent.cpp
@@ -26,6 +26,11 @@ namespace KWin
 KWIN_EFFECT( dialogparent, DialogParentEffect )
 
 DialogParentEffect::DialogParentEffect()
+    {
+    reconfigure( ReconfigureAll );
+    }
+
+void DialogParentEffect::reconfigure( ReconfigureFlags )
     {
     // How long does it take for the effect to get it's full strength (in ms)
     changeTime = animationTime( 200 );
diff --git a/effects/dialogparent.h b/effects/dialogparent.h
index a0cee35e22..08eef031d1 100644
--- a/effects/dialogparent.h
+++ b/effects/dialogparent.h
@@ -39,6 +39,7 @@ class DialogParentEffect
     {
     public:
         DialogParentEffect();
+        virtual void reconfigure( ReconfigureFlags );
 
         virtual void prePaintWindow( EffectWindow* w, WindowPrePaintData& data, int time );
         virtual void paintWindow( EffectWindow* w, int mask, QRegion region, WindowPaintData& data );