diff --git a/radio/src/targets/taranis/board.h b/radio/src/targets/taranis/board.h
index a0c4b9c0b..55c80cbfc 100644
--- a/radio/src/targets/taranis/board.h
+++ b/radio/src/targets/taranis/board.h
@@ -390,7 +390,11 @@ extern uint16_t adcValues[NUMBER_ANALOG];
 uint16_t getAnalogValue(uint8_t index);
 uint16_t getBatteryVoltage();   // returns current battery voltage in 10mV steps
 
-#define BATT_SCALE    150
+#if defined(PCBX7)
+  #define BATT_SCALE    123
+#else
+  #define BATT_SCALE    150
+#endif
 
 #if defined(__cplusplus) && !defined(SIMU)
 extern "C" {