diff --git a/api/core/app/task_pipeline/message_cycle_manager.py b/api/core/app/task_pipeline/message_cycle_manager.py
index 0004fb592e..7a384e5c92 100644
--- a/api/core/app/task_pipeline/message_cycle_manager.py
+++ b/api/core/app/task_pipeline/message_cycle_manager.py
@@ -107,7 +107,6 @@ class MessageCycleManager:
                     if dify_config.DEBUG:
                         logger.exception("generate conversation name failed, conversation_id: %s", conversation_id)
 
-                db.session.merge(conversation)
                 db.session.commit()
                 db.session.close()