diff --git a/src/widgets/widgets/qmainwindowlayout_p.h b/src/widgets/widgets/qmainwindowlayout_p.h
index e565910319..bd4790d77d 100644
--- a/src/widgets/widgets/qmainwindowlayout_p.h
+++ b/src/widgets/widgets/qmainwindowlayout_p.h
@@ -1,8 +1,8 @@
 // Copyright (C) 2016 The Qt Company Ltd.
 // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
 
-#ifndef QDYNAMICMAINWINDOWLAYOUT_P_H
-#define QDYNAMICMAINWINDOWLAYOUT_P_H
+#ifndef QMAINWINDOWLAYOUT_P_H
+#define QMAINWINDOWLAYOUT_P_H
 
 //
 //  W A R N I N G
@@ -608,4 +608,4 @@ QDebug operator<<(QDebug debug, const QMainWindowLayout *layout);
 
 QT_END_NAMESPACE
 
-#endif // QDYNAMICMAINWINDOWLAYOUT_P_H
+#endif // QMAINWINDOWLAYOUT_P_H