diff --git a/homeassistant/components/switch/tellduslive.py b/homeassistant/components/switch/tellduslive.py
index b1450de6c5e..5f3901d79b8 100644
--- a/homeassistant/components/switch/tellduslive.py
+++ b/homeassistant/components/switch/tellduslive.py
@@ -28,7 +28,7 @@ class TelldusLiveSwitch(TelldusLiveEntity, ToggleEntity):
     @property
     def is_on(self):
         """Return true if switch is on."""
-        return self.device.is_on()
+        return self.device.is_on
 
     def turn_on(self, **kwargs):
         """Turn the switch on."""