diff --git a/boards/nucleo32-f303/include/board.h b/boards/nucleo32-f303/include/board.h
index 5eed307664..9eb9b72b87 100644
--- a/boards/nucleo32-f303/include/board.h
+++ b/boards/nucleo32-f303/include/board.h
@@ -18,8 +18,8 @@
  * @author      Alexandre Abadie <alexandre.abadie@inria.fr>
  */
 
-#ifndef BOARD_H_
-#define BOARD_H_
+#ifndef BOARD_H
+#define BOARD_H
 
 #ifdef __cplusplus
 extern "C" {
@@ -47,5 +47,5 @@ void board_init(void);
 }
 #endif
 
-#endif /* BOARD_H_ */
+#endif /* BOARD_H */
 /** @} */
diff --git a/boards/nucleo32-f303/include/periph_conf.h b/boards/nucleo32-f303/include/periph_conf.h
index 39c48c9049..5709344046 100644
--- a/boards/nucleo32-f303/include/periph_conf.h
+++ b/boards/nucleo32-f303/include/periph_conf.h
@@ -16,8 +16,8 @@
  * @author      Alexandre Abadie <alexandre.abadie@inria.fr>
  */
 
-#ifndef PERIPH_CONF_H_
-#define PERIPH_CONF_H_
+#ifndef PERIPH_CONF_H
+#define PERIPH_CONF_H
 
 #include "periph_cpu.h"
 
@@ -152,5 +152,5 @@ static const pwm_conf_t pwm_config[] = {
 }
 #endif
 
-#endif /* PERIPH_CONF_H_ */
+#endif /* PERIPH_CONF_H */
 /** @} */