diff --git a/src/main/drivers/adc.c b/src/main/drivers/adc.c
index d75489c8a7..f6ca5e6c9e 100644
--- a/src/main/drivers/adc.c
+++ b/src/main/drivers/adc.c
@@ -39,7 +39,7 @@
 //#define DEBUG_ADC_CHANNELS
 
 adcOperatingConfig_t adcOperatingConfig[ADC_CHANNEL_COUNT];
-volatile uint16_t adcValues[ADC_CHANNEL_COUNT];
+volatile FAST_RAM_ZERO_INIT uint16_t adcValues[ADC_CHANNEL_COUNT];
 
 #ifdef USE_ADC_INTERNAL
 uint16_t adcTSCAL1;