diff --git a/hassio_api/hassio/api/homeassistant.py b/hassio_api/hassio/api/homeassistant.py
index d37d5a7be..e23b34a5f 100644
--- a/hassio_api/hassio/api/homeassistant.py
+++ b/hassio_api/hassio/api/homeassistant.py
@@ -1,8 +1,6 @@
 """Init file for HassIO homeassistant rest api."""
 import logging
 
-from aiohttp.web_exceptions import HTTPServiceUnavailable
-
 from .util import api_process, json_loads
 from ..const import ATTR_VERSION
 
diff --git a/hassio_api/hassio/config.py b/hassio_api/hassio/config.py
index e39673c3c..db6bfa222 100644
--- a/hassio_api/hassio/config.py
+++ b/hassio_api/hassio/config.py
@@ -52,7 +52,7 @@ class CoreConfig(object):
         """Read current versions from web."""
         current = await fetch_current_versions(self.websession)
 
-        if avilable_updates:
+        if current:
             self._data.update({
                 HOMEASSISTANT_CURRENT: current.get('homeassistant_tag'),
                 HASSIO_CURRENT: current.get('hassio_tag'),
diff --git a/hassio_api/hassio/core.py b/hassio_api/hassio/core.py
index 08cd102e6..e5ba99eea 100644
--- a/hassio_api/hassio/core.py
+++ b/hassio_api/hassio/core.py
@@ -5,10 +5,10 @@ import logging
 import aiohttp
 import docker
 
-from . import bootstrap, tools
+from . import bootstrap
 from .api import RestAPI
 from .host_controll import HostControll
-from .const import HOMEASSISTANT_TAG, SOCKET_DOCKER
+from .const import SOCKET_DOCKER
 from .dock.homeassistant import DockerHomeAssistant
 from .dock.supervisor import DockerSupervisor