diff --git a/api/apps/sdk/doc.py b/api/apps/sdk/doc.py
index 3a82eaa54..d5e0a4758 100644
--- a/api/apps/sdk/doc.py
+++ b/api/apps/sdk/doc.py
@@ -414,7 +414,7 @@ async def download(tenant_id, dataset_id, document_id):
     return await send_file(
         file,
         as_attachment=True,
-        download_name=doc[0].name,
+        attachment_filename=doc[0].name,
         mimetype="application/octet-stream",  # Set a default MIME type
     )