diff --git a/synapse/rest/client/sync.py b/synapse/rest/client/sync.py
index 7604be46fc..7b98aee60f 100644
--- a/synapse/rest/client/sync.py
+++ b/synapse/rest/client/sync.py
@@ -20,7 +20,6 @@
 #
 import itertools
 import logging
-import re
 from collections import defaultdict
 from typing import TYPE_CHECKING, Any, Dict, List, Optional, Tuple, Union