diff --git a/target/linux/ramips/dts/BDCOM-WAP2100-SK.dts b/target/linux/ramips/dts/BDCOM-WAP2100-SK.dts
index 6747f97ca1..745037de0c 100644
--- a/target/linux/ramips/dts/BDCOM-WAP2100-SK.dts
+++ b/target/linux/ramips/dts/BDCOM-WAP2100-SK.dts
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
 /dts-v1/;
 
 #include "mt7620a.dtsi"