diff --git a/src/superio/nuvoton/nct5539d/acpi/superio.asl b/src/superio/nuvoton/nct5539d/acpi/superio.asl
index 70a84a28a7..6f494210fc 100644
--- a/src/superio/nuvoton/nct5539d/acpi/superio.asl
+++ b/src/superio/nuvoton/nct5539d/acpi/superio.asl
@@ -1,5 +1,5 @@
-# SPDX-License-Identifier: GPL-2.0-only
-# This file is part of the coreboot project.
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
 
 /*
  * Include this file into a mainboard's DSDT _SB device tree and it will