diff --git a/homeassistant/components/august/binary_sensor.py b/homeassistant/components/august/binary_sensor.py
index 4116a791b01..581b7a3e0df 100644
--- a/homeassistant/components/august/binary_sensor.py
+++ b/homeassistant/components/august/binary_sensor.py
@@ -181,4 +181,4 @@ class AugustDoorbellBinarySensor(BinarySensorDevice):
         """Get the latest state of the sensor."""
         state_provider = SENSOR_TYPES_DOORBELL[self._sensor_type][2]
         self._state = state_provider(self._data, self._doorbell)
-        self._available = self._state is not None
+        self._available = self._doorbell.is_online