diff --git a/homeassistant/components/vicare/sensor.py b/homeassistant/components/vicare/sensor.py
index 5d51abfbbf6..4ac3c504d9a 100644
--- a/homeassistant/components/vicare/sensor.py
+++ b/homeassistant/components/vicare/sensor.py
@@ -932,7 +932,9 @@ async def async_setup_entry(
         await hass.async_add_executor_job(
             _build_entities,
             device_list,
-        )
+        ),
+        # run update to have device_class set depending on unit_of_measurement
+        True,
     )
 
 
@@ -950,8 +952,6 @@ class ViCareSensor(ViCareEntity, SensorEntity):
         """Initialize the sensor."""
         super().__init__(device_config, api, description.key)
         self.entity_description = description
-        # run update to have device_class set depending on unit_of_measurement
-        self.update()
 
     @property
     def available(self) -> bool: