diff --git a/drivers/hsi/Makefile b/drivers/hsi/Makefile
index 9694478..53c3bcd 100644
--- a/drivers/hsi/Makefile
+++ b/drivers/hsi/Makefile
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0
 #
 # Makefile for HSI
 #