diff --git a/homeassistant/components/owntracks/device_tracker.py b/homeassistant/components/owntracks/device_tracker.py
index 89312f96c68..b1204082887 100644
--- a/homeassistant/components/owntracks/device_tracker.py
+++ b/homeassistant/components/owntracks/device_tracker.py
@@ -154,4 +154,5 @@ class OwnTracksEntity(TrackerEntity, RestoreEntity):
     def update_data(self, data):
         """Mark the device as seen."""
         self._data = data
-        self.async_write_ha_state()
+        if self.hass:
+            self.async_write_ha_state()