diff --git a/app/api/langchain-tools/dalle_image_generator.ts b/app/api/langchain-tools/dalle_image_generator.ts
index 1ce20234f..0c4d14efa 100644
--- a/app/api/langchain-tools/dalle_image_generator.ts
+++ b/app/api/langchain-tools/dalle_image_generator.ts
@@ -119,7 +119,7 @@ export class DallEAPIWrapper extends StructuredTool {
       console.log("[DALL-E]", filePath);
       var imageMarkdown = `![img](${filePath})`;
       if (this.callback != null) await this.callback(imageMarkdown);
-      return imageMarkdown;
+      return "Generated success";
     } catch (e) {
       if (this.callback != null)
         await this.callback("Image upload to OSS failed");