diff --git a/poky/scripts/bitbake-prserv-tool b/poky/scripts/bitbake-prserv-tool
index fa31b52..e55d98c 100755
--- a/poky/scripts/bitbake-prserv-tool
+++ b/poky/scripts/bitbake-prserv-tool
@@ -1,4 +1,7 @@
 #!/usr/bin/env bash
+#
+# SPDX-License-Identifier: GPL-2.0-only
+#
 
 help ()
 {