1 files changed, 3 insertions, 0 deletions
diff --git a/synapse/events/utils.py b/synapse/events/utils.py
index c42b73d11a..824f4a42e3 100644
--- a/synapse/events/utils.py
+++ b/synapse/events/utils.py
@@ -266,6 +266,9 @@ def serialize_event(e, time_now_ms, as_client_event=True,
             if txn_id is not None:
                 d["unsigned"]["transaction_id"] = txn_id
 
+    # If this is an invite for somebody else, then we don't care about the
+    # invite_room_state as that's meant solely for the invitee. Other clients
+    # will already have the state since they're in the room.
     if not is_invite:
         d["unsigned"].pop("invite_room_state", None)