diff --git a/drivers/gpio/sandbox.c b/drivers/gpio/sandbox.c
index 02f2a24..2ef5c67 100644
--- a/drivers/gpio/sandbox.c
+++ b/drivers/gpio/sandbox.c
@@ -1,6 +1,6 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * Copyright (c) 2011 The Chromium OS Authors.
- * SPDX-License-Identifier:	GPL-2.0+
  */
 
 #include <common.h>