diff --git a/lib/services/chat_sse_service.dart b/lib/services/chat_sse_service.dart
index 6fdeceb..c95680b 100644
--- a/lib/services/chat_sse_service.dart
+++ b/lib/services/chat_sse_service.dart
@@ -114,7 +114,7 @@ class ChatSseService {
           if (line.startsWith('data:')) {
             final jsonStr = line.substring(5).trim();
             if (jsonStr == '[DONE]' || jsonStr.contains('message_end')) {
-              await processBuffer(isChinese);
+              TtsUtil.complete();
               onStreamResponse(messageId, responseText, true);
               break;
             }