diff --git a/hassio/dock/supervisor.py b/hassio/dock/supervisor.py
index f12884533..c456b85d5 100644
--- a/hassio/dock/supervisor.py
+++ b/hassio/dock/supervisor.py
@@ -39,7 +39,7 @@ class DockerSupervisor(DockerBase):
         _LOGGER.info("Update supervisor docker to %s:%s", self.image, tag)
 
         # update docker image
-        return self._install(tag):
+        return self._install(tag)
 
     async def run(self):
         """Run docker image."""