diff --git a/plat/rockchip/rk3399/drivers/m0/include/rk3399_mcu.h b/plat/rockchip/rk3399/drivers/m0/include/rk3399_mcu.h
index 176af3a..2e90694 100644
--- a/plat/rockchip/rk3399/drivers/m0/include/rk3399_mcu.h
+++ b/plat/rockchip/rk3399/drivers/m0/include/rk3399_mcu.h
@@ -4,8 +4,8 @@
  * SPDX-License-Identifier: BSD-3-Clause
  */
 
-#ifndef __RK3399_MCU_H__
-#define __RK3399_MCU_H__
+#ifndef RK3399_MCU_H
+#define RK3399_MCU_H
 
 #include <addressmap.h>
 
@@ -29,4 +29,4 @@
 int stopwatch_expired(void);
 void stopwatch_reset(void);
 
-#endif /* __RK3399_MCU_H__ */
+#endif /* RK3399_MCU_H */