diff --git a/include/dt-bindings/leds/leds-ns2.h b/include/dt-bindings/leds/leds-ns2.h
index 491c5f9..fd61574 100644
--- a/include/dt-bindings/leds/leds-ns2.h
+++ b/include/dt-bindings/leds/leds-ns2.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
 #ifndef _DT_BINDINGS_LEDS_NS2_H
 #define _DT_BINDINGS_LEDS_NS2_H