diff --git a/src/widgets/widgets/qtoolbarextension_p.h b/src/widgets/widgets/qtoolbarextension_p.h
index f72dfbd597..cbb4eb5c98 100644
--- a/src/widgets/widgets/qtoolbarextension_p.h
+++ b/src/widgets/widgets/qtoolbarextension_p.h
@@ -54,7 +54,6 @@ QT_BEGIN_NAMESPACE
 class Q_AUTOTEST_EXPORT QToolBarExtension : public QToolButton
 {
     Q_OBJECT
-    Qt::Orientation orientation;
 
 public:
     explicit QToolBarExtension(QWidget *parent);