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 */
diff --git a/plat/rockchip/rk3368/drivers/pmu/pmu.h b/plat/rockchip/rk3368/drivers/pmu/pmu.h
index 4c02107..b4d4807 100644
--- a/plat/rockchip/rk3368/drivers/pmu/pmu.h
+++ b/plat/rockchip/rk3368/drivers/pmu/pmu.h
@@ -4,8 +4,8 @@
  * SPDX-License-Identifier: BSD-3-Clause
  */
 
-#ifndef __PMU_H__
-#define __PMU_H__
+#ifndef PMU_H
+#define PMU_H
 
 /* Allocate sp reginon in pmusram */
 #define PSRAM_SP_SIZE		0x80
@@ -204,4 +204,4 @@
 
 #define MAX_WAIT_CONUT 1000
 
-#endif /* __PMU_H__ */
+#endif /* PMU_H */
diff --git a/plat/rockchip/rk3368/drivers/soc/soc.h b/plat/rockchip/rk3368/drivers/soc/soc.h
index 38d7332..5f24e93 100644
--- a/plat/rockchip/rk3368/drivers/soc/soc.h
+++ b/plat/rockchip/rk3368/drivers/soc/soc.h
@@ -4,8 +4,8 @@
  * SPDX-License-Identifier: BSD-3-Clause
  */
 
-#ifndef __SOC_H__
-#define __SOC_H__
+#ifndef SOC_H
+#define SOC_H
 
 enum plls_id {
 	ABPLL_ID = 0,
@@ -138,4 +138,4 @@
 void soc_sleep_config(void);
 void pm_plls_resume(void);
 
-#endif /* __SOC_H__ */
+#endif /* SOC_H */