diff --git a/src/main/sensors/current.c b/src/main/sensors/current.c
index 0f6ff1b79e..9a1892df19 100644
--- a/src/main/sensors/current.c
+++ b/src/main/sensors/current.c
@@ -126,7 +126,7 @@ void currentMeterADCInit(void)
 
 void currentMeterADCRefresh(int32_t lastUpdateAt)
 {
-    uint16_t iBatSample = adcGetChannel(ADC_CURRENT);
+    const uint16_t iBatSample = adcGetChannel(ADC_CURRENT);
     currentMeterADCState.amperageLatest = currentMeterADCToCentiamps(iBatSample);
     currentMeterADCState.amperage = currentMeterADCToCentiamps(biquadFilterApply(&adciBatFilter, iBatSample));