diff --git a/homeassistant/components/flo/sensor.py b/homeassistant/components/flo/sensor.py
index 9cb070a1c62..58e8417de09 100644
--- a/homeassistant/components/flo/sensor.py
+++ b/homeassistant/components/flo/sensor.py
@@ -67,7 +67,6 @@ async def async_setup_entry(
 class FloDailyUsageSensor(FloEntity, SensorEntity):
     """Monitors the daily water usage."""
 
-    _attr_device_class = SensorDeviceClass.VOLUME
     _attr_icon = WATER_ICON
     _attr_native_unit_of_measurement = VOLUME_GALLONS
     _attr_state_class: SensorStateClass = SensorStateClass.TOTAL_INCREASING