diff --git a/app/client/platforms/alibaba.ts b/app/client/platforms/alibaba.ts
index 9c21a745a..723ba774b 100644
--- a/app/client/platforms/alibaba.ts
+++ b/app/client/platforms/alibaba.ts
@@ -42,7 +42,7 @@ interface RequestParam {
   result_format: string;
   incremental_output?: boolean;
   temperature: number;
-  repetition_penalty: number;
+  repetition_penalty?: number;
   top_p: number;
   max_tokens?: number;
 }