diff --git a/homeassistant/components/miele/sensor.py b/homeassistant/components/miele/sensor.py
index 2f771a9162f..b2ddd695042 100644
--- a/homeassistant/components/miele/sensor.py
+++ b/homeassistant/components/miele/sensor.py
@@ -496,7 +496,7 @@ class MieleSensor(MieleEntity, SensorEntity):
     @property
     def native_value(self) -> StateType:
         """Return the state of the sensor."""
-        return cast(StateType, self.entity_description.value_fn(self.device))
+        return self.entity_description.value_fn(self.device)
 
 
 class MieleStatusSensor(MieleSensor):