diff --git a/slixmpp_omemo/__init__.py b/slixmpp_omemo/__init__.py
index b22ae49..6352c53 100644
--- a/slixmpp_omemo/__init__.py
+++ b/slixmpp_omemo/__init__.py
@@ -309,8 +309,7 @@ class XEP_0384(BasePlugin):
     def _receive_device_list(self, msg: Message) -> None:
         """Handler for received PEP OMEMO_DEVICES_NS payloads"""
         asyncio.ensure_future(
-            self._read_device_list(msg['from'],
-            msg['pubsub_event']['items']),
+            self._read_device_list(msg['from'], msg['pubsub_event']['items']),
         )
 
     async def _read_device_list(self, jid: JID, items: Union[Items, EventItems]) -> None: