1 files changed, 1 insertions, 3 deletions
diff --git a/tests/rest/client/test_sync.py b/tests/rest/client/test_sync.py
index c9afa0f3dd..b9047194dd 100644
--- a/tests/rest/client/test_sync.py
+++ b/tests/rest/client/test_sync.py
@@ -294,9 +294,7 @@ class SyncTypingTests(unittest.HomeserverTestCase):
             self.make_request("GET", sync_url % (access_token, next_batch))
 
 
-class SyncKnockTestCase(
-    unittest.HomeserverTestCase, KnockingStrippedStateEventHelperMixin
-):
+class SyncKnockTestCase(KnockingStrippedStateEventHelperMixin):
     servlets = [
         synapse.rest.admin.register_servlets,
         login.register_servlets,