diff --git a/src/Gui/Qt4All.h b/src/Gui/Qt4All.h
index 195b0b6de..4ab4ac46a 100644
--- a/src/Gui/Qt4All.h
+++ b/src/Gui/Qt4All.h
@@ -51,6 +51,7 @@
 #include <qvariant.h>
 #include <QWaitCondition>
 // QtGui
+#include <QAbstractEventDispatcher>
 #include <QAbstractItemModel>
 #include <QStandardItemModel>
 #include <QAbstractTextDocumentLayout>