diff --git a/firmware/controllers/algo/engine.h b/firmware/controllers/algo/engine.h
index 17c66c71dc..5c7eac74a6 100644
--- a/firmware/controllers/algo/engine.h
+++ b/firmware/controllers/algo/engine.h
@@ -4,8 +4,8 @@
  * @date May 21, 2014
  * @author Andrey Belomutskiy, (c) 2012-2019
  */
-#ifndef H_ENGINE_H_
-#define H_ENGINE_H_
+
+#pragma once
 
 #include "global.h"
 #include "globalaccess.h"
@@ -322,5 +322,3 @@ void prepareOutputSignals(DECLARE_ENGINE_PARAMETER_SIGNATURE);
 
 void validateConfiguration(DECLARE_ENGINE_PARAMETER_SIGNATURE);
 void doScheduleStopEngine(DECLARE_ENGINE_PARAMETER_SIGNATURE);
-
-#endif /* H_ENGINE_H_ */
diff --git a/firmware/controllers/sensors/analog_input.h b/firmware/controllers/sensors/analog_input.h
index 35b4575402..4ca723719b 100644
--- a/firmware/controllers/sensors/analog_input.h
+++ b/firmware/controllers/sensors/analog_input.h
@@ -5,16 +5,6 @@
  * @author Andrey Belomutskiy, (c) 2012-2017
  */
 
-#ifndef CONTROLLERS_SENSORS_ANALOG_INPUT_H_
-#define CONTROLLERS_SENSORS_ANALOG_INPUT_H_
+#pragma once
 
-#if EFI_PROD_CODE
 #include "adc_inputs.h"
-#endif
-
-#if EFI_SIMULATOR
-#include "adc_math.h"
-#endif
-
-
-#endif /* CONTROLLERS_SENSORS_ANALOG_INPUT_H_ */