diff --git a/kview/kimageviewer/canvas.h b/kview/kimageviewer/canvas.h
index 75f601ed..cbc4b029 100644
--- a/kview/kimageviewer/canvas.h
+++ b/kview/kimageviewer/canvas.h
@@ -29,6 +29,7 @@ class TQPoint;
 class TQWidget;
 
 #include <tqstring.h>
+#include <tqobjdefs.h>
 #include <kdemacros.h>
 namespace KImageViewer
 {