diff --git a/effects/blur/blur.cpp b/effects/blur/blur.cpp
index 9800a11244..c024632e33 100644
--- a/effects/blur/blur.cpp
+++ b/effects/blur/blur.cpp
@@ -22,6 +22,7 @@
 
 #include <X11/Xatom.h>
 
+#include <KDebug>
 
 namespace KWin
 {