diff --git a/synapse/rest/client/v2_alpha/sync.py b/synapse/rest/client/v2_alpha/sync.py
index e07b7833ab335b70f581e7c651049dfaad181060..a7a9e0a79403e2f937ee1cf22e5ab22b94ac0b3c 100644
--- a/synapse/rest/client/v2_alpha/sync.py
+++ b/synapse/rest/client/v2_alpha/sync.py
@@ -29,7 +29,6 @@ from synapse.api.errors import SynapseError
 from synapse.api.constants import PresenceState
 from ._base import client_v2_patterns
 
-import copy
 import itertools
 import logging