1 files changed, 3 insertions, 2 deletions
diff --git a/synapse/rest/client/v1/room.py b/synapse/rest/client/v1/room.py
index 86bbcc0eea..44517b179e 100644
--- a/synapse/rest/client/v1/room.py
+++ b/synapse/rest/client/v1/room.py
@@ -704,7 +704,8 @@ 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"),
             )
             return 200, {}
 
@@ -714,7 +715,7 @@ class RoomMembershipRestServlet(TransactionRestServlet):
             target = UserID.from_string(content["user_id"])
 
         event_content = None
-        if "reason" in content and membership_action in ["kick", "ban"]:
+        if "reason" in content:
             event_content = {"reason": content["reason"]}
 
         await self.room_member_handler.update_membership(