diff --git a/app/assets/javascripts/discourse/components/backup-uploader.js.es6 b/app/assets/javascripts/discourse/components/backup-uploader.js.es6
index 3b54695e3d0..62fbb81b85f 100644
--- a/app/assets/javascripts/discourse/components/backup-uploader.js.es6
+++ b/app/assets/javascripts/discourse/components/backup-uploader.js.es6
@@ -28,7 +28,8 @@ export default Em.Component.extend(UploadMixin, {
     return {
       type: "PUT",
       dataType: "xml",
-      autoUpload: false
+      autoUpload: false,
+      multipart: false
     };
   },