diff --git a/themes/bootstrap3/js/lightbox.js b/themes/bootstrap3/js/lightbox.js
index 0b7c1c20bd692a81192ae8fd9480440645e47d80..c890db432d6246b797bb91f9e5fd29c020362002 100644
--- a/themes/bootstrap3/js/lightbox.js
+++ b/themes/bootstrap3/js/lightbox.js
@@ -79,7 +79,7 @@ var Lightbox = {
     if(this.XHR) {
       this.XHR.abort();
     }
-    this.XHR = $.ajax(obj).fail(function(response) {
+    this.XHR = $.ajax(obj).then().fail(function(response) {
       Lightbox.displayError(response.responseJSON.data);
     });
     return this.XHR;