diff --git a/effects/slidingpopups/slidingpopups.cpp b/effects/slidingpopups/slidingpopups.cpp
index 75394b3168..1312d6b0a5 100644
--- a/effects/slidingpopups/slidingpopups.cpp
+++ b/effects/slidingpopups/slidingpopups.cpp
@@ -345,7 +345,6 @@ void SlidingPopupsEffect::setupAnimData(EffectWindow *w)
         }
     }
     // sanitize
-    int difference = 0;
     switch (mWindowsData[w].from) {
     case West:
         mWindowsData[w].start = qMax(windowGeo.left() - screenRect.left(), mWindowsData[w].start);