diff --git a/scripts/kernel-doc b/scripts/kernel-doc
index cbe864e72a2fc967e3baa672ad965928cd82bc4b..b3b9926179510229e131491cd2632e5f55a00497 100755
--- a/scripts/kernel-doc
+++ b/scripts/kernel-doc
@@ -1,4 +1,5 @@
 #!/usr/bin/env perl
+# SPDX-License-Identifier: GPL-2.0
 
 use warnings;
 use strict;