diff --git a/effects.cpp b/effects.cpp
index a4ad2010b5..087eef8f79 100644
--- a/effects.cpp
+++ b/effects.cpp
@@ -1030,7 +1030,7 @@ int EffectsHandlerImpl::displayWidth() const
 
 int EffectsHandlerImpl::displayHeight() const
 {
-    return KWin::displayWidth();
+    return KWin::displayHeight();
 }
 
 EffectWindow* EffectsHandlerImpl::findWindow(WId id) const