diff --git a/app/services/bulk_upload/downloader.rb b/app/services/bulk_upload/downloader.rb
index a3769ce9b..f3dc7ec62 100644
--- a/app/services/bulk_upload/downloader.rb
+++ b/app/services/bulk_upload/downloader.rb
@@ -16,7 +16,7 @@ class BulkUpload::Downloader
   end
 
   def presigned_url
-    s3_storage_service.get_presigned_url(bulk_upload.identifier, 60, response_content_disposition: "attachment; filename=#{bulk_upload.filename}.csv")
+    s3_storage_service.get_presigned_url(bulk_upload.identifier, 60, response_content_disposition: "attachment; filename=#{bulk_upload.filename}")
   end
 
 private