diff --git a/os/hal/ports/AVR/hal_pwm_lld.h b/os/hal/ports/AVR/hal_pwm_lld.h
index ae61f86c9..39dffbce8 100644
--- a/os/hal/ports/AVR/hal_pwm_lld.h
+++ b/os/hal/ports/AVR/hal_pwm_lld.h
@@ -20,15 +20,15 @@
 */
 
 /**
- * @file    AVR/pwm_lld.h
- * @brief   AVR PWM driver subsystem low level driver.
+ * @file    hal_pwm_lld.h
+ * @brief   AVR PWM driver subsystem low level driver header.
  *
  * @addtogroup PWM
  * @{
  */
 
-#ifndef _PWM_LLD_H_
-#define _PWM_LLD_H_
+#ifndef HAL_PWM_LLD_H
+#define HAL_PWM_LLD_H
 
 #if HAL_USE_PWM || defined(__DOXYGEN__)
 
@@ -228,6 +228,6 @@ extern "C" {
 
 #endif /* HAL_USE_PWM */
 
-#endif /* _PWM_LLD_H_ */
+#endif /* HAL_PWM_LLD_H */
 
 /** @} */
diff --git a/os/hal/ports/AVR/hal_spi_lld.h b/os/hal/ports/AVR/hal_spi_lld.h
index f7d0ad03e..73d8ff856 100644
--- a/os/hal/ports/AVR/hal_spi_lld.h
+++ b/os/hal/ports/AVR/hal_spi_lld.h
@@ -15,15 +15,15 @@
 */
 
 /**
- * @file    AVR/spi_lld.h
+ * @file    hal_spi_lld.h
  * @brief   AVR SPI subsystem low level driver header.
  *
  * @addtogroup SPI
  * @{
  */
 
-#ifndef _SPI_LLD_H_
-#define _SPI_LLD_H_
+#ifndef HAL_SPI_LLD_H
+#define HAL_SPI_LLD_H
 
 #if HAL_USE_SPI || defined(__DOXYGEN__)
 
@@ -252,6 +252,6 @@ extern "C" {
 
 #endif /* HAL_USE_SPI */
 
-#endif /* _SPI_LLD_H_ */
+#endif /* HAL_SPI_LLD_H */
 
 /** @} */
diff --git a/os/hal/ports/AVR/hal_st_lld.h b/os/hal/ports/AVR/hal_st_lld.h
index eb20633e4..470980261 100644
--- a/os/hal/ports/AVR/hal_st_lld.h
+++ b/os/hal/ports/AVR/hal_st_lld.h
@@ -15,7 +15,7 @@
 */
 
 /**
- * @file    AVR/st_lld.h
+ * @file    hal_st_lld.h
  * @brief   ST Driver subsystem low level driver header.
  * @details This header is designed to be include-able without having to
  *          include other files from the HAL.
@@ -24,8 +24,8 @@
  * @{
  */
 
-#ifndef _ST_LLD_H_
-#define _ST_LLD_H_
+#ifndef HAL_ST_LLD_H
+#define HAL_ST_LLD_H
 
 #include <avr/io.h>
 
@@ -162,6 +162,6 @@ static inline bool st_lld_is_alarm_active(void) {
   return (bool) ((TIMSK_REG & _BV(OCIE1A)) != 0);
 }
 
-#endif /* _ST_LLD_H_ */
+#endif /* HAL_ST_LLD_H */
 
 /** @} */
diff --git a/os/hal/ports/AVR/hal_usb_lld.h b/os/hal/ports/AVR/hal_usb_lld.h
index c52e23abb..04d758828 100644
--- a/os/hal/ports/AVR/hal_usb_lld.h
+++ b/os/hal/ports/AVR/hal_usb_lld.h
@@ -15,15 +15,15 @@
 */
 
 /**
- * @file    usb_lld.h
+ * @file    hal_usb_lld.h
  * @brief   AVR USB subsystem low level driver header.
  *
  * @addtogroup USB
  * @{
  */
 
-#ifndef _USB_LLD_H_
-#define _USB_LLD_H_
+#ifndef HAL_USB_LLD_H
+#define HAL_USB_LLD_H
 
 #if (HAL_USE_USB == TRUE) || defined(__DOXYGEN__)
 
@@ -397,6 +397,6 @@ extern "C" {
 
 #endif /* HAL_USE_USB == TRUE */
 
-#endif /* _USB_LLD_H_ */
+#endif /* HAL_USB_LLD_H */
 
 /** @} */