diff --git a/firmware/development/rfi_perftest.h b/firmware/development/rfi_perftest.h
index 615eb65c20..6374df30fb 100644
--- a/firmware/development/rfi_perftest.h
+++ b/firmware/development/rfi_perftest.h
@@ -5,11 +5,8 @@
  * @author Andrey Belomutskiy, (c) 2012-2020
  */
 
-#ifndef RFI_PERFTEST_H_
-#define RFI_PERFTEST_H_
+#pragma once
 
 #include "global.h"
 
 void initTimePerfActions(Logging *sharedLogger);
-
-#endif /* RFI_PERFTEST_H_ */
diff --git a/firmware/hw_layer/drivers/gpio/gpio_ext.h b/firmware/hw_layer/drivers/gpio/gpio_ext.h
index 4d6b4eb927..8bb11263a7 100644
--- a/firmware/hw_layer/drivers/gpio/gpio_ext.h
+++ b/firmware/hw_layer/drivers/gpio/gpio_ext.h
@@ -7,8 +7,7 @@
  * @author Andrey Gusakov, (c) 2019
  */
 
-#ifndef GPIO_EXT_H_
-#define GPIO_EXT_H_
+#pragma once
 
 #if EFI_PROD_CODE
 #include "board.h"
@@ -61,5 +60,3 @@ int gpiochips_get_total_pins(void);
 #ifdef __cplusplus
 }
 #endif
-
-#endif /* GPIO_EXT_H_ */
diff --git a/firmware/hw_layer/neo6m.h b/firmware/hw_layer/neo6m.h
index da26342620..e21d1be952 100644
--- a/firmware/hw_layer/neo6m.h
+++ b/firmware/hw_layer/neo6m.h
@@ -7,8 +7,7 @@
  * @author Andrey Belomutskiy, (c) 2012-2020
  */
 
-#ifndef NEO6M_H_
-#define NEO6M_H_
+#pragma once
 
 #ifdef __cplusplus
 extern "C"
@@ -21,5 +20,3 @@ float getCurrentSpeed(void);
 #ifdef __cplusplus
 }
 #endif /* __cplusplus */
-
-#endif /* NEO6M_H_ */
diff --git a/firmware/hw_layer/trigger_input.h b/firmware/hw_layer/trigger_input.h
index 3a83f46f6b..bc2714b0d5 100644
--- a/firmware/hw_layer/trigger_input.h
+++ b/firmware/hw_layer/trigger_input.h
@@ -6,8 +6,7 @@
  * @author Andrey Belomutskiy, (c) 2012-2020
  */
 
-#ifndef CRANK_INPUT_H_
-#define CRANK_INPUT_H_
+#pragma once
 
 #include "engine.h"
 #include "pin_repository.h"
@@ -20,5 +19,3 @@ void turnOnTriggerInputPins(Logging *sharedLogger);
 void applyNewTriggerInputPins(void);
 void startTriggerInputPins(void);
 void stopTriggerInputPins(void);
-
-#endif /* CRANK_INPUT_H_ */
diff --git a/firmware/hw_layer/vehicle_speed.h b/firmware/hw_layer/vehicle_speed.h
index 504020d670..d0e84aae07 100644
--- a/firmware/hw_layer/vehicle_speed.h
+++ b/firmware/hw_layer/vehicle_speed.h
@@ -5,8 +5,7 @@
  * @author Andrey Belomutskiy, (c) 2012-2020
  */
 
-#ifndef HW_LAYER_VEHICLE_SPEED_H_
-#define HW_LAYER_VEHICLE_SPEED_H_
+#pragma once
 
 #include "global.h"
 
@@ -19,5 +18,3 @@ void setMockVehicleSpeed(float speedKPH);
 bool hasVehicleSpeedSensor();
 void stopVSSPins(void);
 void startVSSPins(void);
-
-#endif /* HW_LAYER_VEHICLE_SPEED_H_ */
diff --git a/firmware/os_access.h b/firmware/os_access.h
index 39487685b0..36406f7606 100644
--- a/firmware/os_access.h
+++ b/firmware/os_access.h
@@ -7,8 +7,7 @@
  * @author Andrey Belomutskiy, (c) 2012-2020
  */
 
-#ifndef OS_ACCESS_H_
-#define OS_ACCESS_H_
+#pragma once
 
 #ifdef __cplusplus
 extern "C"
@@ -32,5 +31,3 @@ extern "C"
 EXTERNC int getRemainingStack(thread_t *otp);
 
 #define HAS_OS_ACCESS
-
-#endif /* OS_ACCESS_H_ */
diff --git a/firmware/util/cli_registry.h b/firmware/util/cli_registry.h
index 6fddd12dc4..737f11b82c 100644
--- a/firmware/util/cli_registry.h
+++ b/firmware/util/cli_registry.h
@@ -6,8 +6,7 @@
  * @author Andrey Belomutskiy, (c) 2012-2020
  */
 
-#ifndef RFICONSOLE_LOGIC_H_
-#define RFICONSOLE_LOGIC_H_
+#pragma once
 
 #include "datalogging.h"
 #include "rusefi_types.h"
@@ -85,5 +84,3 @@ void addConsoleActionSSSSS(const char *token, VoidCharPtrCharPtrCharPtrCharPtrCh
 #ifdef __cplusplus
 }
 #endif /* __cplusplus */
-
-#endif /* RFICONSOLE_H_ */
diff --git a/firmware/util/containers/data_buffer.h b/firmware/util/containers/data_buffer.h
index c484113552..6aedb0977a 100644
--- a/firmware/util/containers/data_buffer.h
+++ b/firmware/util/containers/data_buffer.h
@@ -5,8 +5,7 @@
  * @author Andrey Belomutskiy, (c) 2012-2020
  */
 
-#ifndef DATA_BUFFER_H_
-#define DATA_BUFFER_H_
+#pragma once
 
 #define DB_MAX_SIZE 1024
 
@@ -23,5 +22,3 @@ void dbAdd(data_buffer_s *db, int value);
 void dbCopy(data_buffer_s *source, data_buffer_s *target);
 void dbPrint(data_buffer_s *db, char *message, int withDiff);
 void dbPrintTable(data_buffer_s *table[], char *caption[], int columns);
-
-#endif /* DATA_BUFFER_H_ */
diff --git a/firmware/util/containers/fl_stack.h b/firmware/util/containers/fl_stack.h
index 65b3668502..3950725677 100644
--- a/firmware/util/containers/fl_stack.h
+++ b/firmware/util/containers/fl_stack.h
@@ -6,8 +6,7 @@
  * @author Andrey Belomutskiy, (c) 2012-2020
  */
 
-#ifndef FL_STACK_H_
-#define FL_STACK_H_
+#pragma once
 
 #include "global.h"
 
@@ -122,5 +121,3 @@ Type * ArrayList<Type, Dimention>::add(void) {
 	efiAssert(CUSTOM_ERR_ASSERT, size < Dimention, "add() too many elements", (Type *)NULL);
 	return &elements[size++];
 }
-
-#endif /* FL_STACK_H_ */
diff --git a/firmware/util/containers/listener_array.h b/firmware/util/containers/listener_array.h
index b599ab3b64..5cad89f629 100644
--- a/firmware/util/containers/listener_array.h
+++ b/firmware/util/containers/listener_array.h
@@ -5,8 +5,7 @@
  * @author Andrey Belomutskiy, (c) 2012-2020
  */
 
-#ifndef LISTENER_ARRAY_H_
-#define LISTENER_ARRAY_H_
+#pragma once
 
 #include <stddef.h>
 #include "rusefi_types.h"
@@ -121,5 +120,3 @@ void clearCallbacks(IntListenerArray<MAX_INT_LISTENER_COUNT> *array) {
 	array->currentListenersCount = 0;
 }
 
-
-#endif /* LISTENER_ARRAY_H_ */
diff --git a/firmware/util/containers/local_version_holder.h b/firmware/util/containers/local_version_holder.h
index 9bcb9f1b5b..bbfbf56da7 100644
--- a/firmware/util/containers/local_version_holder.h
+++ b/firmware/util/containers/local_version_holder.h
@@ -5,8 +5,7 @@
  * @author Andrey Belomutskiy, (c) 2012-2020
  */
 
-#ifndef LOCALVERSIONHOLDER_H_
-#define LOCALVERSIONHOLDER_H_
+#pragma once
 
 #include "stdbool.h"
 
@@ -31,5 +30,3 @@ private:
 	int localVersion = -1;
 
 };
-
-#endif /* LOCALVERSIONHOLDER_H_ */
diff --git a/firmware/util/containers/table_helper.h b/firmware/util/containers/table_helper.h
index 21a5499f83..2cd4368518 100644
--- a/firmware/util/containers/table_helper.h
+++ b/firmware/util/containers/table_helper.h
@@ -4,8 +4,8 @@
  * @date Jul 6, 2014
  * @author Andrey Belomutskiy, (c) 2012-2020
  */
-#ifndef TABLE_HELPER_H_
-#define TABLE_HELPER_H_
+
+#pragma once
 
 #include <math.h>
 #include "error_handling.h"
@@ -187,5 +187,3 @@ void setArrayValues(TValue (&array)[TSize], TValue value) {
 }
 
 void setRpmTableBin(float array[], int size);
-
-#endif /* TABLE_HELPER_H_ */
diff --git a/firmware/util/datalogging.h b/firmware/util/datalogging.h
index 2c3ffc1fbc..feb691ea37 100644
--- a/firmware/util/datalogging.h
+++ b/firmware/util/datalogging.h
@@ -6,8 +6,7 @@
  * @author Andrey Belomutskiy, (c) 2012-2020
  */
 
-#ifndef DATALOGGING_H_
-#define DATALOGGING_H_
+#pragma once
 
 #include <stdarg.h>
 #include <stdint.h>
@@ -99,5 +98,3 @@ void scheduleLogging(Logging *logging);
 #endif /* __cplusplus */
 
 void printWithLength(char *line);
-
-#endif /* DATALOGGING_H_ */
diff --git a/firmware/util/efilib.h b/firmware/util/efilib.h
index 64ec350fb3..65fc71474e 100644
--- a/firmware/util/efilib.h
+++ b/firmware/util/efilib.h
@@ -5,8 +5,7 @@
  * @author Andrey Belomutskiy, (c) 2012-2020
  */
 
-#ifndef EFILIB_H_
-#define EFILIB_H_
+#pragma once
 
 #include <stdint.h>
 
@@ -123,5 +122,3 @@ constexpr void copyArrayPartial(TElement (&dest)[NDest], const TElement (&src)[N
 // "g++ -O0" or other C++/C compilers
 #define cisnan(f) (*(((int*) (&f))) == 0x7FC00000)
 #endif /* __cplusplus && __OPTIMIZE__ */
-
-#endif /* EFILIB_H_ */
diff --git a/firmware/util/histogram.h b/firmware/util/histogram.h
index 2c3769d8b3..c4e87bc820 100644
--- a/firmware/util/histogram.h
+++ b/firmware/util/histogram.h
@@ -13,8 +13,7 @@
  * @author Andrey Belomutskiy, (c) 2012-2020
  */
 
-#ifndef HISTOGRAM_H_
-#define HISTOGRAM_H_
+#pragma once
 
 #ifdef __cplusplus
 extern "C"
@@ -41,6 +40,3 @@ int hsReport(histogram_s *h, int* report);
 #ifdef __cplusplus
 }
 #endif /* __cplusplus */
-
-
-#endif /* HISTOGRAM_H_ */
diff --git a/firmware/util/loggingcentral.h b/firmware/util/loggingcentral.h
index b3797a3acf..013677f79c 100644
--- a/firmware/util/loggingcentral.h
+++ b/firmware/util/loggingcentral.h
@@ -4,13 +4,10 @@
  * @date Mar 8, 2015
  * @author Andrey Belomutskiy, (c) 2012-2020
  */
-#ifndef UTIL_LOGGINGCENTRAL_H_
-#define UTIL_LOGGINGCENTRAL_H_
+#pragma once
 
 class Logging;
 
 void initLoggingCentral(void);
 char * swapOutputBuffers(int *actualOutputBufferSize);
 void scheduleMsg(Logging *logging, const char *fmt, ...);
-
-#endif /* UTIL_LOGGINGCENTRAL_H_ */
diff --git a/firmware/util/math/avg_values.h b/firmware/util/math/avg_values.h
index 69568454f1..c7e4133662 100644
--- a/firmware/util/math/avg_values.h
+++ b/firmware/util/math/avg_values.h
@@ -5,8 +5,7 @@
  * @author Andrey Belomutskiy, (c) 2012-2020
  */
 
-#ifndef AVG_VALUES_H_
-#define AVG_VALUES_H_
+#pragma once
 
 #define AVG_TAB_SIZE 48
 
@@ -26,5 +25,3 @@ void avgAddValue(AvgTable *table, int rpm, float key, float value);
 float avgGetValueByIndexes(AvgTable *table, int i, int j);
 float avgGetValue(AvgTable *table, int rpm, float key);
 int avgGetValuesCount(AvgTable *table, int rpm, float key);
-
-#endif /* AVG_VALUES_H_ */
diff --git a/firmware/util/math/biquad.h b/firmware/util/math/biquad.h
index 38209bfa5f..d22d2a80dd 100644
--- a/firmware/util/math/biquad.h
+++ b/firmware/util/math/biquad.h
@@ -5,8 +5,7 @@
  * @author Andrey Belomutskiy, (c) 2012-2020
  */
 
-#ifndef CONTROLLERS_MATH_BIQUAD_H_
-#define CONTROLLERS_MATH_BIQUAD_H_
+#pragma once
 
 // todo: narrow this dependency further? only 'bi_quard_s' is needed, should it be extracted / moved to a smaller header?
 // todo: do we need to make code generation smarted and produce a larger number of smaller headers instead of one monster header?
@@ -21,5 +20,3 @@ public:
     float a0, a1, a2, b1, b2;
     float z1, z2;
 };
-
-#endif /* CONTROLLERS_MATH_BIQUAD_H_ */
diff --git a/firmware/util/math/crc.h b/firmware/util/math/crc.h
index 0b6693da35..7e8d647548 100644
--- a/firmware/util/math/crc.h
+++ b/firmware/util/math/crc.h
@@ -5,8 +5,7 @@
  * @author Andrey Belomutskiy, (c) 2012-2020
  */
 
-#ifndef CRC_H_
-#define CRC_H_
+#pragma once
 
 #include "stdint.h"
 
@@ -23,5 +22,3 @@ uint32_t crc32inc(const void *buf, uint32_t crc, uint32_t size);
 #ifdef __cplusplus
 }
 #endif /* __cplusplus */
-
-#endif /* CRC_H_ */
diff --git a/firmware/util/math/interpolation.h b/firmware/util/math/interpolation.h
index 3322f89bd9..4d03a89e6a 100644
--- a/firmware/util/math/interpolation.h
+++ b/firmware/util/math/interpolation.h
@@ -5,8 +5,7 @@
  * @author Andrey Belomutskiy, (c) 2012-2020
  */
 
-#ifndef INTERPOLATION_3D_H_
-#define INTERPOLATION_3D_H_
+#pragma once
 
 #include <math.h>
 #include "datalogging.h"
@@ -243,5 +242,3 @@ public:
 private:
 	float a, b;
 };
-
-#endif /* INTERPOLATION_3D_H_ */
diff --git a/firmware/util/math/pid.h b/firmware/util/math/pid.h
index 36c7f3bf45..ad7360a249 100644
--- a/firmware/util/math/pid.h
+++ b/firmware/util/math/pid.h
@@ -5,8 +5,7 @@
  * @author Andrey Belomutskiy, (c) 2012-2020
  */
 
-#ifndef PID_H_
-#define PID_H_
+#pragma once
 
 #include "engine_state_generated.h"
 #include "pid_state_generated.h"
@@ -128,5 +127,3 @@ public:
 private:
 	float limitOutput(float v) const;
 };
-
-#endif /* PID_H_ */
diff --git a/firmware/util/math/signal_filtering.h b/firmware/util/math/signal_filtering.h
index 7543eb9fe8..01df176e19 100644
--- a/firmware/util/math/signal_filtering.h
+++ b/firmware/util/math/signal_filtering.h
@@ -5,8 +5,7 @@
  * @author Andrey Belomutskiy, (c) 2012-2020
  */
 
-#ifndef SIGNAL_FILTERING_H_
-#define SIGNAL_FILTERING_H_
+#pragma once
 
 #define FILTER_SIZE 5
 
@@ -21,5 +20,3 @@ void sfInit(SignalFiltering *fs, float K, float initialValue);
 void sfAddValue(SignalFiltering *fs, float value);
 void sfAddValue2(SignalFiltering *fs, float value);
 float sfGetValue(SignalFiltering *fs);
-
-#endif /* SIGNAL_FILTERING_H_ */
diff --git a/firmware/util/os_util.h b/firmware/util/os_util.h
index 207461909e..3124dc599e 100644
--- a/firmware/util/os_util.h
+++ b/firmware/util/os_util.h
@@ -6,8 +6,7 @@
  * @author Andrey Belomutskiy, (c) 2012-2020
  */
 
-#ifndef RFIUTIL_H_
-#define RFIUTIL_H_
+#pragma once
 
 #include "global.h"
 
@@ -42,6 +41,3 @@ void printHistogram(Logging *logging, histogram_s *histogram);
 #endif /* __cplusplus */
 
 #endif /* EFI_UNIT_TEST */
-
-#endif /* RFIUTIL_H_ */
-
diff --git a/firmware/util/rusefi_true.h b/firmware/util/rusefi_true.h
index d6c2f00346..376bcc32a2 100644
--- a/firmware/util/rusefi_true.h
+++ b/firmware/util/rusefi_true.h
@@ -5,8 +5,7 @@
  * @author Andrey Belomutskiy, (c) 2012-2020
  */
 
-#ifndef CONTROLLERS_ALGO_RUSEFI_TRUE_H_
-#define CONTROLLERS_ALGO_RUSEFI_TRUE_H_
+#pragma once
 
 // we still have a minor mess with headers, this header should better be included as high as possible
 
@@ -17,5 +16,3 @@
 #ifndef TRUE
 #define TRUE (!(FALSE))
 #endif /* TRUE */
-
-#endif /* CONTROLLERS_ALGO_RUSEFI_TRUE_H_ */
diff --git a/unit_tests/adc_inputs.h b/unit_tests/adc_inputs.h
index 80bf095932..b31e410367 100644
--- a/unit_tests/adc_inputs.h
+++ b/unit_tests/adc_inputs.h
@@ -5,9 +5,6 @@
  * @author Andrey Belomutskiy, (c) 2012-2020
  */
 
-#ifndef ADC_INPUTS_H_
-#define ADC_INPUTS_H_
+#pragma once
 
 #include "boards.h"
-
-#endif /* ADC_INPUTS_H_ */
diff --git a/unit_tests/afm2mapConverter.h b/unit_tests/afm2mapConverter.h
index 05400bdf75..3a3dd5eb5d 100644
--- a/unit_tests/afm2mapConverter.h
+++ b/unit_tests/afm2mapConverter.h
@@ -5,9 +5,6 @@
  * @date Jan 20, 2018
  */
 
-#ifndef AFM2MAPCONVERTER_H_
-#define AFM2MAPCONVERTER_H_
+#pragma once
 
 void printConvertedTable();
-
-#endif /* AFM2MAPCONVERTER_H_ */
diff --git a/unit_tests/efifeatures.h b/unit_tests/efifeatures.h
index c7c1fe99e1..b38f006a4d 100644
--- a/unit_tests/efifeatures.h
+++ b/unit_tests/efifeatures.h
@@ -5,8 +5,7 @@
  * @author Andrey Belomutskiy, (c) 2012-2020
  */
 
-#ifndef EFIFEATURES_H_
-#define EFIFEATURES_H_
+#pragma once
 
 #include "rusefi_true.h"
 
@@ -70,5 +69,3 @@
 #define EFI_JOYSTICK FALSE
 
 #define EFI_MAP_AVERAGING TRUE
-
-#endif /* EFIFEATURES_H_ */
diff --git a/unit_tests/global_execution_queue.h b/unit_tests/global_execution_queue.h
index b1e341d741..f568ad9954 100644
--- a/unit_tests/global_execution_queue.h
+++ b/unit_tests/global_execution_queue.h
@@ -5,8 +5,7 @@
  * @author Andrey Belomutskiy, (c) 2012-2020
  */
 
-#ifndef GLOBAL_EXECUTION_QUEUE_H_
-#define GLOBAL_EXECUTION_QUEUE_H_
+#pragma once
 
 #include "scheduler.h"
 #include "event_queue.h"
@@ -23,5 +22,3 @@ public:
 private:
 	EventQueue schedulingQueue;
 };
-
-#endif /* GLOBAL_EXECUTION_QUEUE_H_ */
diff --git a/unit_tests/main.cpp b/unit_tests/main.cpp
index 20a0d9a248..bf659906ba 100644
--- a/unit_tests/main.cpp
+++ b/unit_tests/main.cpp
@@ -9,7 +9,6 @@
 #include <stdlib.h>
 
 #include "global.h"
-#include "test_interpolation_3d.h"
 #include "test_find_index.h"
 
 #include "engine_configuration.h"
diff --git a/unit_tests/map_resize.h b/unit_tests/map_resize.h
index 9c2c043e91..102502aa83 100644
--- a/unit_tests/map_resize.h
+++ b/unit_tests/map_resize.h
@@ -5,9 +5,6 @@
  * @author Andrey Belomutskiy, (c) 2012-2020
  */
 
-#ifndef MAP_RESIZE_H_
-#define MAP_RESIZE_H_
+#pragma once
 
 void resizeMap(void);
-
-#endif /* MAP_RESIZE_H_ */
diff --git a/unit_tests/os_access.h b/unit_tests/os_access.h
index 60e1de3860..aaa3b76b00 100644
--- a/unit_tests/os_access.h
+++ b/unit_tests/os_access.h
@@ -7,7 +7,3 @@
  * @author Andrey Belomutskiy, (c) 2012-2020
  */
 
-#ifndef OS_ACCESS_H_
-#define OS_ACCESS_H_
-
-#endif /* OS_ACCESS_H_ */
diff --git a/unit_tests/settings.h b/unit_tests/settings.h
deleted file mode 100644
index 31327e150e..0000000000
--- a/unit_tests/settings.h
+++ /dev/null
@@ -1,13 +0,0 @@
-/**
- * @file	settings.h
- *
- * @date Feb 13, 2014
- * @author Andrey Belomutskiy, (c) 2012-2014
- */
-
-#ifndef SETTINGS_H_
-#define SETTINGS_H_
-
-
-
-#endif /* SETTINGS_H_ */
diff --git a/unit_tests/test_basic_math/test_find_index.h b/unit_tests/test_basic_math/test_find_index.h
index 3f9fcf1ed6..850649e01c 100644
--- a/unit_tests/test_basic_math/test_find_index.h
+++ b/unit_tests/test_basic_math/test_find_index.h
@@ -5,9 +5,6 @@
  * @author Andrey Belomutskiy, (c) 2012-2020
  */
 
-#ifndef TEST_FIND_INDEX_H_
-#define TEST_FIND_INDEX_H_
+#pragma once
 
 void testFindIndex(void);
-
-#endif /* TEST_FIND_INDEX_H_ */
diff --git a/unit_tests/test_basic_math/test_interpolation_3d.cpp b/unit_tests/test_basic_math/test_interpolation_3d.cpp
index 2dc909935a..1e03d5cc4e 100644
--- a/unit_tests/test_basic_math/test_interpolation_3d.cpp
+++ b/unit_tests/test_basic_math/test_interpolation_3d.cpp
@@ -5,7 +5,6 @@
  * @author Andrey Belomutskiy, (c) 2012-2020
  */
 
-#include "test_interpolation_3d.h"
 #include <stdlib.h>
 
 #include "interpolation.h"
diff --git a/unit_tests/test_basic_math/test_interpolation_3d.h b/unit_tests/test_basic_math/test_interpolation_3d.h
deleted file mode 100644
index 0528c36db8..0000000000
--- a/unit_tests/test_basic_math/test_interpolation_3d.h
+++ /dev/null
@@ -1,15 +0,0 @@
-/*
- *  Created on: Oct 17, 2013
- *      Author: Andrey Belomutskiy, (c) 2012-2015
- */
-
-/**
- * @file    test_interpolation_3d.h
- */
-
-
-#ifndef TEST_INTERPOLATION_3D_H_
-#define TEST_INTERPOLATION_3D_H_
-
-
-#endif /* TEST_INTERPOLATION_3D_H_ */
diff --git a/unit_tests/tests/test_parameters.h b/unit_tests/tests/test_parameters.h
index 24d8ce7e62..dd4013a41c 100644
--- a/unit_tests/tests/test_parameters.h
+++ b/unit_tests/tests/test_parameters.h
@@ -5,8 +5,7 @@
  * @author Andrey Belomutskiy, (c) 2012-2020
  */
 
-#ifndef TESTS_TEST_PARAMETERS_H_
-#define TESTS_TEST_PARAMETERS_H_
+#pragma once
 
 #include <unordered_map>
 using namespace std;
@@ -18,4 +17,3 @@ public:
 	float get(string key) const;
 };
 
-#endif /* TESTS_TEST_PARAMETERS_H_ */
diff --git a/unit_tests/tests/test_signal_executor.h b/unit_tests/tests/test_signal_executor.h
index a57093fb87..e38f1c9c9d 100644
--- a/unit_tests/tests/test_signal_executor.h
+++ b/unit_tests/tests/test_signal_executor.h
@@ -5,9 +5,6 @@
  * @author Andrey Belomutskiy, (c) 2012-2020
  */
 
-#ifndef TEST_SIGNAL_EXECUTOR_H_
-#define TEST_SIGNAL_EXECUTOR_H_
+#pragma once
 
 int getRevolutionCounter();
-
-#endif /* TEST_SIGNAL_EXECUTOR_H_ */