diff --git a/src/plugins/networkinformation/networklistmanager/qnetworklistmanagerevents.h b/src/plugins/networkinformation/networklistmanager/qnetworklistmanagerevents.h
index 43a3252c497..548baef2307 100644
--- a/src/plugins/networkinformation/networklistmanager/qnetworklistmanagerevents.h
+++ b/src/plugins/networkinformation/networklistmanager/qnetworklistmanagerevents.h
@@ -1,6 +1,9 @@
 // Copyright (C) 2021 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 QNETWORKLISTMANAGEREVENTS_H
+#define QNETWORKLISTMANAGEREVENTS_H
+
 #include <QtNetwork/private/qtnetworkglobal_p.h>
 
 #include <QtNetwork/qnetworkinformation.h>
@@ -73,3 +76,5 @@ private:
 };
 
 QT_END_NAMESPACE
+
+#endif // QNETWORKLISTMANAGEREVENTS_H
diff --git a/src/tools/qlalr/recognizer.h b/src/tools/qlalr/recognizer.h
index ce07ff361f5..31d606e6578 100644
--- a/src/tools/qlalr/recognizer.h
+++ b/src/tools/qlalr/recognizer.h
@@ -1,6 +1,9 @@
 // Copyright (C) 2016 The Qt Company Ltd.
 // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
 
+#ifndef RECOGNIZER_H
+#define RECOGNIZER_H
+
 #include "grammar_p.h"
 
 #include "lalr.h"
@@ -72,3 +75,5 @@ protected:
   QString _M_current_value;
   bool _M_no_lines;
 };
+
+#endif // RECOGNIZER_H