diff --git a/poky/bitbake/lib/bblayers/query.py b/poky/bitbake/lib/bblayers/query.py
index 9294dfa..993589d 100644
--- a/poky/bitbake/lib/bblayers/query.py
+++ b/poky/bitbake/lib/bblayers/query.py
@@ -1,3 +1,7 @@
+#
+# SPDX-License-Identifier: GPL-2.0-only
+#
+
 import collections
 import fnmatch
 import logging