diff --git a/plat/rockchip/rk3368/drivers/ddr/ddr_rk3368.h b/plat/rockchip/rk3368/drivers/ddr/ddr_rk3368.h
index 057d961..15912b5 100644
--- a/plat/rockchip/rk3368/drivers/ddr/ddr_rk3368.h
+++ b/plat/rockchip/rk3368/drivers/ddr/ddr_rk3368.h
@@ -4,8 +4,8 @@
  * SPDX-License-Identifier: BSD-3-Clause
  */
 
-#ifndef __DDR_RK3368_H__
-#define __DDR_RK3368_H__
+#ifndef DDR_RK3368_H
+#define DDR_RK3368_H
 
 #define DDR_PCTL_SCFG		0x0
 #define DDR_PCTL_SCTL		0x4
@@ -244,4 +244,4 @@
 uint32_t *ddr_get_resume_code_base(void);
 void ddr_reg_save(uint32_t pllpdstat, uint64_t base_addr);
 
-#endif
+#endif /* DDR_RK3368_H */