diff --git a/board/intel/minnowmax/Makefile b/board/intel/minnowmax/Makefile
index 73e5a8f..989344d 100644
--- a/board/intel/minnowmax/Makefile
+++ b/board/intel/minnowmax/Makefile
@@ -1,8 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0+
 #
 # Copyright (C) 2015, Google, Inc
-#
-# SPDX-License-Identifier:	GPL-2.0+
-#
 
 obj-y	+= minnowmax.o start.o
 obj-$(CONFIG_GENERATE_ACPI_TABLE) += dsdt.o
diff --git a/board/intel/minnowmax/acpi/mainboard.asl b/board/intel/minnowmax/acpi/mainboard.asl
index 21785ea..beb9d93 100644
--- a/board/intel/minnowmax/acpi/mainboard.asl
+++ b/board/intel/minnowmax/acpi/mainboard.asl
@@ -1,7 +1,6 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
 /*
  * Copyright (C) 2016, Bin Meng <bmeng.cn@gmail.com>
- *
- * SPDX-License-Identifier:	GPL-2.0+
  */
 
 /* Power Button */
diff --git a/board/intel/minnowmax/dsdt.asl b/board/intel/minnowmax/dsdt.asl
index 6042011..d2297ef 100644
--- a/board/intel/minnowmax/dsdt.asl
+++ b/board/intel/minnowmax/dsdt.asl
@@ -1,7 +1,6 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
 /*
  * Copyright (C) 2016, Bin Meng <bmeng.cn@gmail.com>
- *
- * SPDX-License-Identifier:	GPL-2.0+
  */
 
 DefinitionBlock("dsdt.aml", "DSDT", 2, "U-BOOT", "U-BOOTBL", 0x00010000)
diff --git a/board/intel/minnowmax/minnowmax.c b/board/intel/minnowmax/minnowmax.c
index 5bdb2fd..e5fc939 100644
--- a/board/intel/minnowmax/minnowmax.c
+++ b/board/intel/minnowmax/minnowmax.c
@@ -1,7 +1,6 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * Copyright (C) 2015, Google, Inc
- *
- * SPDX-License-Identifier:	GPL-2.0+
  */
 
 #include <common.h>
diff --git a/board/intel/minnowmax/start.S b/board/intel/minnowmax/start.S
index 2c941a4..65d1f7e 100644
--- a/board/intel/minnowmax/start.S
+++ b/board/intel/minnowmax/start.S
@@ -1,7 +1,6 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
 /*
  * Copyright (C) 2015, Google, Inc
- *
- * SPDX-License-Identifier:	GPL-2.0+
  */
 
 .globl early_board_init