diff --git a/cmake/modulecppexports.h.in b/cmake/modulecppexports.h.in
index a7a349084ec..d4864bb9d43 100644
--- a/cmake/modulecppexports.h.in
+++ b/cmake/modulecppexports.h.in
@@ -1,6 +1,8 @@
 // Copyright (C) 2022 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
 
+// This file is autogenerated. Changes will be overwritten.
+
 #include <QtCore/qglobal.h>
 
 #ifndef @header_base_name_upper@_H
diff --git a/cmake/modulecppexports_p.h.in b/cmake/modulecppexports_p.h.in
index 5f873e3c702..c4e029d5e1a 100644
--- a/cmake/modulecppexports_p.h.in
+++ b/cmake/modulecppexports_p.h.in
@@ -4,6 +4,8 @@
 #ifndef @header_base_name_upper@_P_H
 #define @header_base_name_upper@_P_H
 
+// This file is autogenerated. Changes will be overwritten.
+
 //
 //  W A R N I N G
 //  -------------