diff --git a/src/gui/menu_general.cpp b/src/gui/menu_general.cpp
index 6302c0fcc..7072b11aa 100644
--- a/src/gui/menu_general.cpp
+++ b/src/gui/menu_general.cpp
@@ -993,6 +993,7 @@ void menuGeneralDiagAna(uint8_t event)
   adcBatt = ((adcBatt * 7) + anaIn(8)) / 8; // running average, sourced directly (to avoid unending debate :P)
   uint32_t batCalV = ( adcBatt + adcBatt*(g_eeGeneral.vBatCalib)/128 ) * BATT_SCALE;
   batCalV >>= 11;
+  batCalV += 2; // because of the diode
   putsVolts(LEN_CALIB_FIELDS*FW+4*FW, 6*FH+1, batCalV, (m_posVert==1 ? INVERS : 0));
 #else
   lcd_putsLeft(6*FH-2, STR_BATT_CALIB);
diff --git a/src/opentx.cpp b/src/opentx.cpp
index 135ebbb38..63d10c6a4 100644
--- a/src/opentx.cpp
+++ b/src/opentx.cpp
@@ -3673,11 +3673,11 @@ void perMain()
     int32_t instant_vbat = anaIn(TX_VOLTAGE);
     instant_vbat = ( instant_vbat + instant_vbat*(g_eeGeneral.vBatCalib)/128 ) * BATT_SCALE;
     instant_vbat >>= 11;
+    instant_vbat += 2; // because of the diode
 #elif defined(PCBSKY9X)
     int32_t instant_vbat = anaIn(TX_VOLTAGE);
     instant_vbat = ( instant_vbat + instant_vbat*(g_eeGeneral.vBatCalib)/128 ) * 4191;
     instant_vbat /= 55296;
-    instant_vbat += 2; // because of the diode
 #elif defined(PCBGRUVIN9X)
     uint16_t instant_vbat = anaIn(TX_VOLTAGE);
     instant_vbat = ((uint32_t)instant_vbat*1112 + (int32_t)instant_vbat*g_eeGeneral.vBatCalib + (BandGap<<2)) / (BandGap<<3);