diff --git a/homeassistant/components/binary_sensor/wemo.py b/homeassistant/components/binary_sensor/wemo.py
index f3cd91baa04..0e3259a3a96 100644
--- a/homeassistant/components/binary_sensor/wemo.py
+++ b/homeassistant/components/binary_sensor/wemo.py
@@ -45,6 +45,9 @@ class WemoBinarySensor(BinarySensorDevice):
         _LOGGER.info(
             'Subscription update for  %s',
             _device)
+        if not hasattr(self, 'hass'):
+            self.update()
+            return
         self.update_ha_state(True)
 
     @property
diff --git a/homeassistant/components/switch/wemo.py b/homeassistant/components/switch/wemo.py
index 90d0f46ba68..63b2665449e 100644
--- a/homeassistant/components/switch/wemo.py
+++ b/homeassistant/components/switch/wemo.py
@@ -63,6 +63,9 @@ class WemoSwitch(SwitchDevice):
         _LOGGER.info(
             'Subscription update for  %s',
             _device)
+        if not hasattr(self, 'hass'):
+            self.update()
+            return
         self.update_ha_state(True)
 
     @property