diff --git a/mt7615/sdio.h b/mt7615/sdio.h
index 05180971..03877d89 100644
--- a/mt7615/sdio.h
+++ b/mt7615/sdio.h
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: ISC
+/* SPDX-License-Identifier: ISC */
 /* Copyright (C) 2020 MediaTek Inc.
  *
  * Author: Sean Wang <sean.wang@mediatek.com>
diff --git a/mt7915/testmode.h b/mt7915/testmode.h
index 8f8533ef..397a6b55 100644
--- a/mt7915/testmode.h
+++ b/mt7915/testmode.h
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: ISC
+/* SPDX-License-Identifier: ISC */
 /* Copyright (C) 2020 MediaTek Inc. */
 
 #ifndef __MT7915_TESTMODE_H