diff --git a/board/shmin/Makefile b/board/shmin/Makefile
index d169661..697fc20 100644
--- a/board/shmin/Makefile
+++ b/board/shmin/Makefile
@@ -1,10 +1,10 @@
+# SPDX-License-Identifier: GPL-2.0+
 #
 # Copyright (C) 2010 Nobuhiro Iwamatsu
 # Copyright (C) 2008 Renesas Solutions Corp.
 #
 # u-boot/board/shmin/Makefile
 #
-# SPDX-License-Identifier:	GPL-2.0+
 
 obj-y	:= shmin.o
 extra-y	+= lowlevel_init.o
diff --git a/board/shmin/lowlevel_init.S b/board/shmin/lowlevel_init.S
index 53b3123..e4b6ae0 100644
--- a/board/shmin/lowlevel_init.S
+++ b/board/shmin/lowlevel_init.S
@@ -1,7 +1,6 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
 /*
  * (C) Copyright 2008, 2010 Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
- *
- * SPDX-License-Identifier:	GPL-2.0+
  */
 
 #include <config.h>
diff --git a/board/shmin/shmin.c b/board/shmin/shmin.c
index 42bd126..91918e9 100644
--- a/board/shmin/shmin.c
+++ b/board/shmin/shmin.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * Copyright (C) 2007 - 2010
  *     Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
@@ -7,8 +8,6 @@
  *
  * board/shmin/shmin.c
  *
- * SPDX-License-Identifier:	GPL-2.0+
- *
  * Copy board_flash_get_legacy() from board/freescale/m54455evb/m54455evb.c
  */