diff --git a/roles/init-server/defaults/main/security.yml b/roles/init-server/defaults/main/security.yml
index 47f3670..e1279cc 100644
--- a/roles/init-server/defaults/main/security.yml
+++ b/roles/init-server/defaults/main/security.yml
@@ -1,2 +1,5 @@
+#SPDX-License-Identifier: MIT-0
+---
+# defaults file for roles/init-vps
 # <str<bool>> whether to harden managed node's SSH service
 harden: true
\ No newline at end of file