diff --git a/homeassistant/components/vicare/sensor.py b/homeassistant/components/vicare/sensor.py
index 0488f068452..da1119711a4 100644
--- a/homeassistant/components/vicare/sensor.py
+++ b/homeassistant/components/vicare/sensor.py
@@ -455,7 +455,7 @@ GLOBAL_SENSORS: tuple[ViCareSensorEntityDescription, ...] = (
     ViCareSensorEntityDescription(
         key="buffer top temperature",
         name="Buffer top temperature",
-        native_unit_of_measurement=TEMP_CELSIUS,
+        native_unit_of_measurement=UnitOfTemperature.CELSIUS,
         value_getter=lambda api: api.getBufferTopTemperature(),
         device_class=SensorDeviceClass.TEMPERATURE,
         state_class=SensorStateClass.MEASUREMENT,
@@ -463,7 +463,7 @@ GLOBAL_SENSORS: tuple[ViCareSensorEntityDescription, ...] = (
     ViCareSensorEntityDescription(
         key="buffer main temperature",
         name="Buffer main temperature",
-        native_unit_of_measurement=TEMP_CELSIUS,
+        native_unit_of_measurement=UnitOfTemperature.CELSIUS,
         value_getter=lambda api: api.getBufferMainTemperature(),
         device_class=SensorDeviceClass.TEMPERATURE,
         state_class=SensorStateClass.MEASUREMENT,