diff --git a/firmware/config/boards/hellen/hellen81/board.mk b/firmware/config/boards/hellen/hellen81/board.mk
index 56102b47a5..502b4bfe71 100644
--- a/firmware/config/boards/hellen/hellen81/board.mk
+++ b/firmware/config/boards/hellen/hellen81/board.mk
@@ -16,10 +16,10 @@ DDEFS += -DFIRMWARE_ID=\"hellen81\"
 DDEFS += -DHAL_TRIGGER_USE_ADC=TRUE
 
 # we need fast ADC for software trigger detector
-#DDEFS += -DEFI_OVERRIDE_FAST_ADC_FOR_STM32H7=TRUE -DADC_FAST_DEVICE=ADCD1 -DADC_SLOW_DEVICE=ADCD3 -DSTM32_ADC_USE_ADC3=TRUE
+#DDEFS += -DADC_FAST_DEVICE=ADCD1 -DADC_SLOW_DEVICE=ADCD3 -DSTM32_ADC_USE_ADC3=TRUE
 #DDEFS += -DADC_SLOW_DEVICE=ADCD3 -DSTM32_ADC_USE_ADC3=TRUE
 
-DDEFS += -DEFI_OVERRIDE_FAST_ADC_FOR_STM32H7=TRUE -DADC_FAST_DEVICE=ADCD1 -DEFI_USE_ONLY_FAST_ADC=TRUE -DEFI_FASTER_UNIFORM_ADC=TRUE
+DDEFS += -DADC_FAST_DEVICE=ADCD1 -DEFI_USE_ONLY_FAST_ADC=TRUE -DEFI_FASTER_UNIFORM_ADC=TRUE
 DDEFS += -DADC_BUF_DEPTH_FAST=1
 DDEFS += -DADC_BUF_NUM_AVG=1
 #DDEFS += -DADC_SLOW_DEVICE=ADCD1