diff --git a/radio/src/targets/taranis/hal.h b/radio/src/targets/taranis/hal.h
index bb56e857f..9ad0c9cd6 100644
--- a/radio/src/targets/taranis/hal.h
+++ b/radio/src/targets/taranis/hal.h
@@ -752,7 +752,7 @@
   #define ADC_GPIOC_PINS                (GPIO_Pin_0 | GPIO_Pin_1)
   #define ADC_CHANNEL_POT1              ADC_Channel_11 // ADC1_IN11
   #define ADC_CHANNEL_BATT              ADC_Channel_10 // ADC1_IN10
-  #define ADC_VREF_PREC2                330
+  #define ADC_VREF_PREC2                300
 #else
   #define HARDWARE_POT1
   #define HARDWARE_POT2