diff --git a/target/linux/ramips/dts/EX6150.dts b/target/linux/ramips/dts/EX6150.dts
index 729173bdd6..a5827f270d 100644
--- a/target/linux/ramips/dts/EX6150.dts
+++ b/target/linux/ramips/dts/EX6150.dts
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
 /dts-v1/;
 
 #include "mt7621.dtsi"