diff --git a/synapse/storage/databases/main/stream.py b/synapse/storage/databases/main/stream.py
index 91f8abb67d..7581c7d3ff 100644
--- a/synapse/storage/databases/main/stream.py
+++ b/synapse/storage/databases/main/stream.py
@@ -1,4 +1,3 @@
-# -*- coding: utf-8 -*-
# Copyright 2014-2016 OpenMarket Ltd
# Copyright 2017 Vector Creations Ltd
# Copyright 2018-2019 New Vector Ltd
@@ -38,7 +37,7 @@ what sort order was used:
import abc
import logging
from collections import namedtuple
-from typing import TYPE_CHECKING, Dict, List, Optional, Set, Tuple
+from typing import TYPE_CHECKING, Collection, Dict, List, Optional, Set, Tuple
from twisted.internet import defer
@@ -54,7 +53,7 @@ from synapse.storage.database import (
from synapse.storage.databases.main.events_worker import EventsWorkerStore
from synapse.storage.engines import BaseDatabaseEngine, PostgresEngine
from synapse.storage.util.id_generators import MultiWriterIdGenerator
-from synapse.types import Collection, PersistedEventPosition, RoomStreamToken
+from synapse.types import PersistedEventPosition, RoomStreamToken
from synapse.util.caches.descriptors import cached
from synapse.util.caches.stream_change_cache import StreamChangeCache
|