diff --git a/core/openconfig.h b/core/openconfig.h
index e3370c703..c2a4cf91b 100644
--- a/core/openconfig.h
+++ b/core/openconfig.h
@@ -4,6 +4,8 @@
  * SPDX-License-Identifier: GPL-2.0-only OR GPL-3.0-only OR LicenseRef-KDE-Accepted-GPL
  */
 
+#pragma once
+
 #include <QObject>
 
 #include "kdeconnectcore_export.h"