diff --git a/effects/desktopgrid/desktopgrid.cpp b/effects/desktopgrid/desktopgrid.cpp
index f9967f2116..1866b1f4da 100644
--- a/effects/desktopgrid/desktopgrid.cpp
+++ b/effects/desktopgrid/desktopgrid.cpp
@@ -640,7 +640,7 @@ void DesktopGridEffect::windowInputMouseEvent( Window, QEvent* e )
             EffectWindow* w = isDesktop ? NULL : windowAt( me->pos());
             if ( w != NULL )
                 isDesktop = w->isDesktop();
-            if( w != NULL && ( w->isMovable() || w->isMovableAcrossScreens() || isUsingPresentWindows() ))
+            if( w != NULL && !w->isDesktop() && ( w->isMovable() || w->isMovableAcrossScreens() || isUsingPresentWindows() ))
                 { // Prepare it for moving
                 windowMoveDiff = w->pos() - unscalePos( me->pos(), NULL );
                 windowMove = w;