diff --git a/backend/open_webui/models/chats.py b/backend/open_webui/models/chats.py
index 98f41b5079..202d8cdc60 100644
--- a/backend/open_webui/models/chats.py
+++ b/backend/open_webui/models/chats.py
@@ -1565,7 +1565,7 @@ class ChatTable:
     async def archive_all_chats_by_user_id(self, user_id: str, db: AsyncSession | None = None) -> bool:
         try:
             async with get_async_db_context(db) as session:
-                await session.execute(update(Chat).filter_by(user_id=user_id).values(archived=True))
+                await session.execute(update(Chat).filter_by(user_id=user_id).values(archived=True, folder_id=None))
                 await session.commit()
                 return True
         except Exception: