diff --git a/zerver/lib/actions.py b/zerver/lib/actions.py
index 87d752d01b..229f5cbe3a 100644
--- a/zerver/lib/actions.py
+++ b/zerver/lib/actions.py
@@ -4403,7 +4403,6 @@ def do_update_embedded_data(user_profile: UserProfile,
                             rendered_content: Optional[str]) -> None:
     event: Dict[str, Any] = {
         'type': 'update_message',
-        'sender': user_profile.email,
         'message_id': message.id}
     changed_messages = [message]
 
diff --git a/zerver/lib/event_schema.py b/zerver/lib/event_schema.py
index c3b6efcac1..0068f6daf1 100644
--- a/zerver/lib/event_schema.py
+++ b/zerver/lib/event_schema.py
@@ -761,7 +761,6 @@ check_update_message_embedded = check_events_dict(
         ("message_id", check_int),
         ("message_ids", check_list(check_int)),
         ("rendered_content", check_string),
-        ("sender", check_string),
     ]
 )