1 files changed, 2 insertions, 1 deletions
diff --git a/synapse/rest/client/v1/room.py b/synapse/rest/client/v1/room.py
index 84baf3d59b..3929d5519d 100644
--- a/synapse/rest/client/v1/room.py
+++ b/synapse/rest/client/v1/room.py
@@ -739,7 +739,8 @@ class RoomMembershipRestServlet(TransactionRestServlet):
                     content["id_server"],
                     requester,
                     txn_id,
-                    content.get("id_access_token"),
+                    new_room=False,
+                    id_access_token=content.get("id_access_token"),
                 )
             except ShadowBanError:
                 # Pretend the request succeeded.