diff --git a/drivers/usb/mtu3/mtu3.h b/drivers/usb/mtu3/mtu3.h
index 6087be236a35..d49db92ab26c 100644
--- a/drivers/usb/mtu3/mtu3.h
+++ b/drivers/usb/mtu3/mtu3.h
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  * mtu3.h - MediaTek USB3 DRD header
  *
diff --git a/drivers/usb/mtu3/mtu3_debug.h b/drivers/usb/mtu3/mtu3_debug.h
index e96a69234d05..fb6b28277c9b 100644
--- a/drivers/usb/mtu3/mtu3_debug.h
+++ b/drivers/usb/mtu3/mtu3_debug.h
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  * mtu3_debug.h - debug header
  *
diff --git a/drivers/usb/mtu3/mtu3_dr.h b/drivers/usb/mtu3/mtu3_dr.h
index 5e58c4dbd54a..760fe7d69c6b 100644
--- a/drivers/usb/mtu3/mtu3_dr.h
+++ b/drivers/usb/mtu3/mtu3_dr.h
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  * mtu3_dr.h - dual role switch and host glue layer header
  *
diff --git a/drivers/usb/mtu3/mtu3_hw_regs.h b/drivers/usb/mtu3/mtu3_hw_regs.h
index 8382d066749e..bf34f784f84b 100644
--- a/drivers/usb/mtu3/mtu3_hw_regs.h
+++ b/drivers/usb/mtu3/mtu3_hw_regs.h
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  * mtu3_hw_regs.h - MediaTek USB3 DRD register and field definitions
  *
diff --git a/drivers/usb/mtu3/mtu3_qmu.h b/drivers/usb/mtu3/mtu3_qmu.h
index 9cfde201db63..66e1c0ab5a99 100644
--- a/drivers/usb/mtu3/mtu3_qmu.h
+++ b/drivers/usb/mtu3/mtu3_qmu.h
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0
+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  * mtu3_qmu.h - Queue Management Unit driver header
  *
diff --git a/drivers/usb/mtu3/mtu3_trace.h b/drivers/usb/mtu3/mtu3_trace.h
index 050e30f0fbd4..1b897636daf2 100644
--- a/drivers/usb/mtu3/mtu3_trace.h
+++ b/drivers/usb/mtu3/mtu3_trace.h
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0
+/* SPDX-License-Identifier: GPL-2.0 */
 /**
  * mtu3_trace.h - trace support
  *