diff --git a/poky/scripts/combo-layer-hook-default.sh b/poky/scripts/combo-layer-hook-default.sh
index 1e3a3b9..11547a9 100755
--- a/poky/scripts/combo-layer-hook-default.sh
+++ b/poky/scripts/combo-layer-hook-default.sh
@@ -1,4 +1,7 @@
 #!/bin/sh
+#
+# SPDX-License-Identifier: GPL-2.0-only
+#
 # Hook to add source component/revision info to commit message
 # Parameter:
 #   $1 patch-file