diff --git a/kdgantt/qlayoutengine_p.h b/kdgantt/qlayoutengine_p.h
index 4042e218f..15cd80de2 100644
--- a/kdgantt/qlayoutengine_p.h
+++ b/kdgantt/qlayoutengine_p.h
@@ -56,7 +56,7 @@
 
 
 #ifndef TQT_H
-#include "tqabstracttqlayout.h"
+#include "tqabstractlayout.h"
 #endif // TQT_H
 
 #ifndef TQT_NO_LAYOUT