1 files changed, 1 insertions, 1 deletions
diff --git a/synapse/handlers/message.py b/synapse/handlers/message.py
index 2137d2461e..af72c2b42a 100644
--- a/synapse/handlers/message.py
+++ b/synapse/handlers/message.py
@@ -473,7 +473,7 @@ class EventCreationHandler:
         Returns:
             Tuple of created event, Context
         """
-        await self.auth.check_auth_blocking(requester.user.to_string())
+        await self.auth.check_auth_blocking(requester=requester)
 
         if event_dict["type"] == EventTypes.Create and event_dict["state_key"] == "":
             room_version = event_dict["content"]["room_version"]