diff --git a/Documentation/gpl_copyright_header.h b/Documentation/gpl_copyright_header.h
new file mode 100644
index 00000000..cba7e0cf
--- /dev/null
+++ b/Documentation/gpl_copyright_header.h
@@ -0,0 +1,15 @@
+/*
+filename.ext - do not include this file, only copy the header
+Copyright (C) 2015-2025 Xash3D FWGS contributors
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+*/
+