1 files changed, 2 insertions, 0 deletions
diff --git a/synapse/handlers/federation.py b/synapse/handlers/federation.py
index 15a04bb777..c07ba171e3 100644
--- a/synapse/handlers/federation.py
+++ b/synapse/handlers/federation.py
@@ -1311,6 +1311,8 @@ class FederationHandler(BaseHandler):
                 sender, target, event.room_id,
             )
 
+        FrozenEvent.from_event(event)
+        event.unsigned.pop("invite_room_state", None)
         defer.returnValue(event)
 
     @defer.inlineCallbacks