diff --git a/packages/service/core/workflow/dispatch/tools/readFiles.ts b/packages/service/core/workflow/dispatch/tools/readFiles.ts
index f732dc66e..f7dd497e4 100644
--- a/packages/service/core/workflow/dispatch/tools/readFiles.ts
+++ b/packages/service/core/workflow/dispatch/tools/readFiles.ts
@@ -199,7 +199,7 @@ export const getFileContentFromLinks = async ({
           const buffer = Buffer.from(response.data, 'binary');
 
           const urlObj = new URL(url, 'http://localhost:3000');
-          const isChatExternalUrl = urlObj.pathname.startsWith(
+          const isChatExternalUrl = !urlObj.pathname.startsWith(
             `/${S3Buckets.private}/${S3Sources.chat}/`
           );