diff --git a/engine/services/dashscope_tts.py b/engine/services/dashscope_tts.py
index ef01f3b..6d89221 100644
--- a/engine/services/dashscope_tts.py
+++ b/engine/services/dashscope_tts.py
@@ -84,7 +84,7 @@ class DashScopeTTSService(BaseTTSService):
         api_url: Optional[str] = None,
         voice: str = "Cherry",
         model: Optional[str] = None,
-        mode: str = "server_commit",
+        mode: str = "commit",
         sample_rate: int = 16000,
         speed: float = 1.0,
     ):