diff --git a/homeassistant/components/homewizard/sensor.py b/homeassistant/components/homewizard/sensor.py
index a66a2664ae1..df4eb0c4880 100644
--- a/homeassistant/components/homewizard/sensor.py
+++ b/homeassistant/components/homewizard/sensor.py
@@ -130,7 +130,7 @@ SENSORS: Final[tuple[SensorEntityDescription, ...]] = (
         key="total_liter_m3",
         name="Total water usage",
         native_unit_of_measurement=VOLUME_CUBIC_METERS,
-        icon="mdi:gauge",
+        device_class=SensorDeviceClass.VOLUME,
         state_class=SensorStateClass.TOTAL_INCREASING,
     ),
 )
diff --git a/tests/components/homewizard/test_sensor.py b/tests/components/homewizard/test_sensor.py
index 145a2719b01..7d350764b2b 100644
--- a/tests/components/homewizard/test_sensor.py
+++ b/tests/components/homewizard/test_sensor.py
@@ -609,8 +609,8 @@ async def test_sensor_entity_total_liters(
 
     assert state.attributes.get(ATTR_STATE_CLASS) == SensorStateClass.TOTAL_INCREASING
     assert state.attributes.get(ATTR_UNIT_OF_MEASUREMENT) == VOLUME_CUBIC_METERS
-    assert ATTR_DEVICE_CLASS not in state.attributes
-    assert state.attributes.get(ATTR_ICON) == "mdi:gauge"
+    assert state.attributes.get(ATTR_DEVICE_CLASS) == SensorDeviceClass.VOLUME
+    assert state.attributes.get(ATTR_ICON) is None
 
 
 async def test_sensor_entity_disabled_when_null(