diff --git a/include/drivers/generic_delay_timer.h b/include/drivers/generic_delay_timer.h
index 1c53a72..adba10f 100644
--- a/include/drivers/generic_delay_timer.h
+++ b/include/drivers/generic_delay_timer.h
@@ -4,8 +4,8 @@
  * SPDX-License-Identifier: BSD-3-Clause
  */
 
-#ifndef __GENERIC_DELAY_TIMER_H__
-#define __GENERIC_DELAY_TIMER_H__
+#ifndef GENERIC_DELAY_TIMER_H
+#define GENERIC_DELAY_TIMER_H
 
 #include <stdint.h>
 
@@ -13,4 +13,4 @@
 
 void generic_delay_timer_init(void);
 
-#endif /* __GENERIC_DELAY_TIMER_H__ */
+#endif /* GENERIC_DELAY_TIMER_H */