diff --git a/homeassistant/components/cloud/iot.py b/homeassistant/components/cloud/iot.py
index 02bdc6fca8f..0b3e7c5eada 100644
--- a/homeassistant/components/cloud/iot.py
+++ b/homeassistant/components/cloud/iot.py
@@ -63,8 +63,7 @@ class CloudIoT:
             yield from hass.async_add_job(auth_api.check_token, self.cloud)
 
             self.client = client = yield from session.ws_connect(
-                'ws://{}/websocket'.format(self.cloud.relayer),
-                headers=headers)
+                self.cloud.relayer, headers=headers)
             self.tries = 0
 
             remove_hass_stop_listener = hass.bus.async_listen_once(