diff --git a/hbmqtt/plugins/manager.py b/hbmqtt/plugins/manager.py
index 0621866..2e087cc 100644
--- a/hbmqtt/plugins/manager.py
+++ b/hbmqtt/plugins/manager.py
@@ -14,6 +14,7 @@ Plugin = namedtuple('Plugin', ['name', 'ep', 'object'])
 
 plugins_manager = dict()
 
+
 def get_plugin_manager(namespace):
     global plugins_manager
     return plugins_manager.get(namespace, None)
@@ -26,6 +27,7 @@ class BaseContext:
         else:
             self._loop = asyncio.get_event_loop()
 
+
 class PluginManager:
     """
     Wraps setuptools Entry point mechanism to provide a basic plugin system.