diff --git a/firmware/controllers/algo/nmea.h b/firmware/controllers/algo/nmea.h
index ef4931be4d..ba730b133b 100644
--- a/firmware/controllers/algo/nmea.h
+++ b/firmware/controllers/algo/nmea.h
@@ -3,8 +3,8 @@
  * https://github.com/wdalmut/libgps/tree/develop/src
  *
  */
-#ifndef _NMEA_H_
-#define _NMEA_H_
+
+#pragma once
 
 #ifdef __cplusplus
 extern "C"
@@ -54,4 +54,3 @@ void gps_location(loc_t *, char *);
 }
 #endif /* __cplusplus */
 
-#endif
diff --git a/firmware/controllers/algo/obd_error_codes.h b/firmware/controllers/algo/obd_error_codes.h
index 1c07572129..9fde1bd93e 100644
--- a/firmware/controllers/algo/obd_error_codes.h
+++ b/firmware/controllers/algo/obd_error_codes.h
@@ -8,8 +8,7 @@
  * @author Andrey Belomutskiy, (c) 2012-2020
  */
 
-#ifndef OBD_ERROR_CODES_H_
-#define OBD_ERROR_CODES_H_
+#pragma once
 
 // this header should not depend on anything - actually chconf.h usually depends on this header
 
@@ -2118,5 +2117,3 @@ typedef enum {
 }
 #endif /* __cplusplus */
 
-
-#endif /* OBD_ERROR_CODES_H_ */
diff --git a/firmware/controllers/algo/rusefi_hw_enums.h b/firmware/controllers/algo/rusefi_hw_enums.h
index 0dff07fada..2369fe0d28 100644
--- a/firmware/controllers/algo/rusefi_hw_enums.h
+++ b/firmware/controllers/algo/rusefi_hw_enums.h
@@ -5,8 +5,7 @@
  * @author Andrey Belomutskiy, (c) 2012-2020
  */
 
-#ifndef RUSEFI_HW_ENUMS_H_
-#define RUSEFI_HW_ENUMS_H_
+#pragma once
 
 // todo: migrate/unify with pin_output_mode_e? rename? something is messy here
 // this enum is currently only used for SPI pins
@@ -282,4 +281,3 @@ typedef enum __attribute__ ((__packed__)) {
 
 #define INCOMPATIBLE_CONFIG_CHANGE EFI_ADC_0
 
-#endif /* RUSEFI_HW_ENUMS_H_ */
diff --git a/firmware/hw_layer/drivers/gpio/mc33810.h b/firmware/hw_layer/drivers/gpio/mc33810.h
index 6edb3d445e..aeb4acf634 100644
--- a/firmware/hw_layer/drivers/gpio/mc33810.h
+++ b/firmware/hw_layer/drivers/gpio/mc33810.h
@@ -10,8 +10,7 @@
  * @author Andrey Gusakov <dron0gus@gmail.com>, (c) 2020
  */
 
-#ifndef HW_LAYER_MC33810_H_
-#define HW_LAYER_MC33810_H_
+#pragma once
 
 #include "efifeatures.h"
 #include <hal.h>
@@ -47,4 +46,3 @@ int mc33810_add(unsigned int index, const struct mc33810_config *cfg);
 }
 #endif /* __cplusplus */
 
-#endif /* HW_LAYER_MC33810_H_ */
diff --git a/firmware/hw_layer/drivers/gpio/mc33972.h b/firmware/hw_layer/drivers/gpio/mc33972.h
index 86756835b1..a3807bcbb8 100644
--- a/firmware/hw_layer/drivers/gpio/mc33972.h
+++ b/firmware/hw_layer/drivers/gpio/mc33972.h
@@ -7,8 +7,7 @@
  * @author Andrey Gusakov <dron0gus@gmail.com>, (c) 2019
  */
 
-#ifndef HW_LAYER_MC33972_H_
-#define HW_LAYER_MC33972_H_
+#pragma once
 
 #include <hal.h>
 #include "efifeatures.h"
@@ -34,4 +33,3 @@ int mc33972_add(unsigned int index, const struct mc33972_config *cfg);
 }
 #endif /* __cplusplus */
 
-#endif /* HW_LAYER_MC33972_H_ */
diff --git a/firmware/hw_layer/drivers/gpio/tle6240.h b/firmware/hw_layer/drivers/gpio/tle6240.h
index bc6e971787..a29e0efa92 100644
--- a/firmware/hw_layer/drivers/gpio/tle6240.h
+++ b/firmware/hw_layer/drivers/gpio/tle6240.h
@@ -7,8 +7,7 @@
  * @author Andrey Belomutskiy, (c) 2012-2020
  */
 
-#ifndef HW_LAYER_TLE6240_H_
-#define HW_LAYER_TLE6240_H_
+#pragma once
 
 #include "efifeatures.h"
 #include <hal.h>
@@ -43,4 +42,3 @@ int tle6240_add(unsigned int index, const struct tle6240_config *cfg);
 }
 #endif /* __cplusplus */
 
-#endif /* HW_LAYER_TLE6240_H_ */
diff --git a/firmware/hw_layer/drivers/gpio/tle8888.h b/firmware/hw_layer/drivers/gpio/tle8888.h
index 5aefd6365e..b5d24c1f90 100644
--- a/firmware/hw_layer/drivers/gpio/tle8888.h
+++ b/firmware/hw_layer/drivers/gpio/tle8888.h
@@ -5,8 +5,7 @@
  * @author Andrey Belomutskiy, (c) 2012-2020
  */
 
-#ifndef HW_LAYER_DRIVERS_GPIO_TLE8888_H_
-#define HW_LAYER_DRIVERS_GPIO_TLE8888_H_
+#pragma once
 
 #include "global.h"
 
@@ -62,4 +61,3 @@ void tle8888PostState(TsDebugChannels *tsDebugChannels);
 }
 #endif /* __cplusplus */
 
-#endif /* HW_LAYER_DRIVERS_GPIO_TLE8888_H_ */