diff --git a/plat/socionext/synquacer/drivers/mhu/sq_mhu.h b/plat/socionext/synquacer/drivers/mhu/sq_mhu.h
index bef117d..f6b5cc3 100644
--- a/plat/socionext/synquacer/drivers/mhu/sq_mhu.h
+++ b/plat/socionext/synquacer/drivers/mhu/sq_mhu.h
@@ -4,8 +4,8 @@
  * SPDX-License-Identifier: BSD-3-Clause
  */
 
-#ifndef __SQ_MHU_H__
-#define __SQ_MHU_H__
+#ifndef SQ_MHU_H
+#define SQ_MHU_H
 
 #include <stdint.h>
 
@@ -16,4 +16,4 @@
 
 void mhu_secure_init(void);
 
-#endif	/* __SQ_MHU_H__ */
+#endif /* SQ_MHU_H */
diff --git a/plat/socionext/synquacer/drivers/scpi/sq_scpi.h b/plat/socionext/synquacer/drivers/scpi/sq_scpi.h
index 30fa5c7..38cc19e 100644
--- a/plat/socionext/synquacer/drivers/scpi/sq_scpi.h
+++ b/plat/socionext/synquacer/drivers/scpi/sq_scpi.h
@@ -4,8 +4,8 @@
  * SPDX-License-Identifier: BSD-3-Clause
  */
 
-#ifndef __SQ_SCPI_H__
-#define __SQ_SCPI_H__
+#ifndef SQ_SCPI_H
+#define SQ_SCPI_H
 
 #include <stddef.h>
 #include <stdint.h>
@@ -79,4 +79,4 @@
 					scpi_power_state_t css_state);
 uint32_t scpi_sys_power_state(scpi_system_state_t system_state);
 
-#endif	/* __SQ_SCPI_H__ */
+#endif /* SQ_SCPI_H */