diff --git a/stock-fixed.dts b/stock-fixed.dts
index 6f93002..169a69c 100644
--- a/stock-fixed.dts
+++ b/stock-fixed.dts
@@ -1,3 +1,6 @@
+// SPDX-License-Identifier: GPL-2.0
+// Device Tree Source extracted from OpenWrt 15.05 based firmware
+// See accompanying README for full license details
 /dts-v1/;
 
 / {