diff --git a/custom_components/iaquk/sensor.py b/custom_components/iaquk/sensor.py
index 7e67644..86b66c1 100644
--- a/custom_components/iaquk/sensor.py
+++ b/custom_components/iaquk/sensor.py
@@ -65,12 +65,12 @@ def __init__(self, controller, sensor_type: str):
         """Initialize sensor."""
         self._controller = controller
         self._sensor_type = sensor_type
+        self._attr_unique_id = f"{controller.unique_id}_{sensor_type}"
 
         self.entity_id = async_generate_entity_id(
             ENTITY_ID_FORMAT, self._attr_unique_id, hass=controller.hass
         )
 
-        self._attr_unique_id = f"{controller.unique_id}_{sensor_type}"
         self._attr_name = f"{controller.name} {SENSORS[sensor_type]}"
         self._attr_state_class = (
             SensorStateClass.MEASUREMENT if sensor_type == SENSOR_INDEX else None