diff --git a/synapse/handlers/federation.py b/synapse/handlers/federation.py
index 3994137d1..ab82f8362 100644
--- a/synapse/handlers/federation.py
+++ b/synapse/handlers/federation.py
@@ -2569,7 +2569,7 @@ class FederationHandler(BaseHandler):
         event, context = yield self.event_creation_handler.create_new_client_event(
             builder=builder
         )
-        EventValidator().validate_new(event)
+        EventValidator().validate_new(event, self.config)
         return (event, context)
 
     @defer.inlineCallbacks