diff --git a/lib/kwineffects.cpp b/lib/kwineffects.cpp
index e52dd2b185..3717f50b90 100644
--- a/lib/kwineffects.cpp
+++ b/lib/kwineffects.cpp
@@ -960,7 +960,7 @@ QRect PaintClipper::Iterator::boundingRect() const
  TimeLine
 ***************************************************************/
 
-TimeLine::TimeLine(const int duration)
+TimeLine::TimeLine(int duration)
     {
     m_Time = 0;
     m_Duration = duration;