diff --git a/custom_components/redfin/config_flow.py b/custom_components/redfin/config_flow.py
index e156d9c..6153575 100644
--- a/custom_components/redfin/config_flow.py
+++ b/custom_components/redfin/config_flow.py
@@ -111,7 +111,7 @@ async def async_step_init(
         errors: Dict[str, str] = {}
         # Grab all configured propert id's from the entity registry so we can populate the
         # multi-select dropdown that will allow a user to remove a property.
-        entity_registry = await async_get(self.hass)
+        entity_registry = sync_get(self.hass)
         entries = async_entries_for_config_entry(
             entity_registry, self.config_entry.entry_id
         )
diff --git a/custom_components/redfin/const.py b/custom_components/redfin/const.py
index e7a978c..cae951b 100644
--- a/custom_components/redfin/const.py
+++ b/custom_components/redfin/const.py
@@ -21,3 +21,4 @@
 CONF_SCAN_INTERVAL_MAX = 600
 
 ICON = "mdi:home-variant"
+STATE_CLASS_MEASUREMENT = "measurement"
diff --git a/custom_components/redfin/sensor.py b/custom_components/redfin/sensor.py
index d2b1dab..7b0c71d 100644
--- a/custom_components/redfin/sensor.py
+++ b/custom_components/redfin/sensor.py
@@ -8,7 +8,7 @@
 
 from .const import (DEFAULT_NAME, DOMAIN, CONF_PROPERTIES, ATTRIBUTION, DEFAULT_SCAN_INTERVAL, CONF_PROPERTY_IDS,
                     ICON, CONF_PROPERTY_ID, ATTR_AMOUNT, ATTR_AMOUNT_FORMATTED, ATTR_ADDRESS, ATTR_FULL_ADDRESS,
-                    ATTR_CURRENCY, ATTR_STREET_VIEW, ATTR_REDFIN_URL, RESOURCE_URL, ATTR_UNIT_OF_MEASUREMENT)
+                    ATTR_CURRENCY, ATTR_STREET_VIEW, ATTR_REDFIN_URL, RESOURCE_URL, ATTR_UNIT_OF_MEASUREMENT, STATE_CLASS_MEASUREMENT)
 from homeassistant.core import callback
 from homeassistant.components.sensor import PLATFORM_SCHEMA, SensorEntity
 from homeassistant.helpers.event import async_track_time_interval