diff --git a/src/common/QskGradient.cpp b/src/common/QskGradient.cpp
index 3202b02f..be96be0f 100644
--- a/src/common/QskGradient.cpp
+++ b/src/common/QskGradient.cpp
@@ -9,6 +9,7 @@
 #include "QskFunctions.h"
 
 #include <qvariant.h>
+#include <qdebug.h>
 
 static void qskRegisterGradient()
 {