diff --git a/usermods/BME280_v2/usermod_bme280.h b/usermods/BME280_v2/usermod_bme280.h
index 9168f4229..aa6d003f3 100644
--- a/usermods/BME280_v2/usermod_bme280.h
+++ b/usermods/BME280_v2/usermod_bme280.h
@@ -444,6 +444,7 @@ public:
     configComplete &= getJsonValue(top[F("PublishAlways")], PublishAlways, false);
     configComplete &= getJsonValue(top[F("UseCelsius")], UseCelsius, true);
     configComplete &= getJsonValue(top[F("HomeAssistantDiscovery")], HomeAssistantDiscovery, false);
+    tempScale = UseCelsius ? "°C" : "°F";
 
     DEBUG_PRINT(FPSTR(_name));
     if (!initDone) {