diff --git a/firmware/hw_layer/ports/kinetis/kinetis_common.cpp b/firmware/hw_layer/ports/kinetis/kinetis_common.cpp
index a7e14c629e..9c1f82c824 100644
--- a/firmware/hw_layer/ports/kinetis/kinetis_common.cpp
+++ b/firmware/hw_layer/ports/kinetis/kinetis_common.cpp
@@ -30,6 +30,8 @@
 // ADC_CHANNEL_IN15 // PC17 (def=IAT)
 
 brain_pin_e getAdcChannelBrainPin(const char *msg, adc_channel_e hwChannel) {
+	static_assert(EFI_ADC_NONE == ADC_CHANNEL_NONE);
+
 	// todo: replace this with an array :)
 	switch (hwChannel) {
 	case EFI_ADC_0:
diff --git a/firmware/hw_layer/ports/stm32/stm32_common.cpp b/firmware/hw_layer/ports/stm32/stm32_common.cpp
index 6f9439ab2f..3969c4f618 100644
--- a/firmware/hw_layer/ports/stm32/stm32_common.cpp
+++ b/firmware/hw_layer/ports/stm32/stm32_common.cpp
@@ -39,6 +39,8 @@
 // ADC_CHANNEL_IN15 // PC5
 
 brain_pin_e getAdcChannelBrainPin(const char *msg, adc_channel_e hwChannel) {
+	static_assert(EFI_ADC_NONE == ADC_CHANNEL_NONE);
+
 	// todo: replace this with an array :)
 	switch (hwChannel) {
 	case EFI_ADC_0: