diff --git a/firmware/hw_layer/AdcConfiguration.h b/firmware/hw_layer/AdcConfiguration.h
index c731ecd24a..40beb64d4b 100644
--- a/firmware/hw_layer/AdcConfiguration.h
+++ b/firmware/hw_layer/AdcConfiguration.h
@@ -37,7 +37,7 @@ public:
 	// F4 does not care
 	__ALIGNED(32) adcsample_t samples[ADC_MAX_CHANNELS_COUNT * MAX_ADC_GRP_BUF_DEPTH];
 	// Assert multiple of 32 bytes long so we don't stomp on the data after the buffer
-	static_assert(sizeof(samples) % 32 == 0);
+	static_assert(sizeof(samples) % 32 == 0, "ADC sample buffer alignment");
 
 	int getAdcValueByHwChannel(int hwChannel) const;
 
diff --git a/firmware/hw_layer/can_hw.cpp b/firmware/hw_layer/can_hw.cpp
index d877eca282..f654cda20d 100644
--- a/firmware/hw_layer/can_hw.cpp
+++ b/firmware/hw_layer/can_hw.cpp
@@ -305,11 +305,13 @@ void setCanType(int type) {
 	canInfo();
 }
 
+#if defined(EFI_TUNER_STUDIO)
 void postCanState(TunerStudioOutputChannels *tsOutputChannels) {
 	tsOutputChannels->debugIntField1 = isCanEnabled ? canReadCounter : -1;
 	tsOutputChannels->debugIntField2 = isCanEnabled ? canWriteOk : -1;
 	tsOutputChannels->debugIntField3 = isCanEnabled ? canWriteNotOk : -1;
 }
+#endif /* EFI_TUNER_STUDIO */
 
 void enableFrankensoCan(DECLARE_ENGINE_PARAMETER_SIGNATURE) {
 	CONFIGB(canTxPin) = GPIOB_6;
diff --git a/firmware/hw_layer/can_hw.h b/firmware/hw_layer/can_hw.h
index c64c5d08f7..9d195d2b03 100644
--- a/firmware/hw_layer/can_hw.h
+++ b/firmware/hw_layer/can_hw.h
@@ -5,8 +5,7 @@
  * @author Andrey Belomutskiy, (c) 2012-2019
  */
 
-#ifndef CAN_HW_H_
-#define CAN_HW_H_
+#pragma once
 
 #include "efifeatures.h"
 #if EFI_TUNER_STUDIO
@@ -48,7 +47,9 @@ void setTxBit(int offset, int index);
 void stopCanPins(DECLARE_ENGINE_PARAMETER_SIGNATURE);
 void startCanPins(DECLARE_ENGINE_PARAMETER_SIGNATURE);
 void enableFrankensoCan(DECLARE_ENGINE_PARAMETER_SIGNATURE);
+#if defined(EFI_TUNER_STUDIO)
 void postCanState(TunerStudioOutputChannels *tsOutputChannels);
-#endif
+#endif /* EFI_TUNER_STUDIO */
+#endif /* EFI_CAN_SUPPORT */
+
 
-#endif /* CAN_HW_H_ */
diff --git a/firmware/hw_layer/stepper.cpp b/firmware/hw_layer/stepper.cpp
index 56071785e3..5891dc4833 100644
--- a/firmware/hw_layer/stepper.cpp
+++ b/firmware/hw_layer/stepper.cpp
@@ -143,20 +143,21 @@ void StepperMotor::setDirection(bool isIncrementing) {
 
 void StepperMotor::pulse() {
 #if EFI_PROD_CODE
-	palWritePad(enablePort, enablePin, false); // enable stepper
-	palWritePad(stepPort, stepPin, true);
+	palWritePad(enablePort, enablePin, 0); // enable stepper
+	palWritePad(stepPort, stepPin, 1);
 	chThdSleepMilliseconds(reactionTime);
 
-	palWritePad(stepPort, stepPin, false);
+	palWritePad(stepPort, stepPin, 0);
 	chThdSleepMilliseconds(reactionTime);
 
-	palWritePad(enablePort, enablePin, true); // disable stepper
-#endif
+	palWritePad(enablePort, enablePin, 1); // disable stepper
+#endif /* EFI_PROD_CODE */
 }
 
 void StepperMotor::initialize(brain_pin_e stepPin, brain_pin_e directionPin, pin_output_mode_e directionPinMode,
 		float reactionTime, int totalSteps,
 		brain_pin_e enablePin, pin_output_mode_e enablePinMode, Logging *sharedLogger) {
+	UNUSED(enablePinMode);
 	this->reactionTime = maxF(1, reactionTime);
 	this->totalSteps = maxI(3, totalSteps);