diff --git a/addons/website/static/src/js/website.js b/addons/website/static/src/js/website.js
index b12a33f9952..cf8597254f9 100644
--- a/addons/website/static/src/js/website.js
+++ b/addons/website/static/src/js/website.js
@@ -137,15 +137,17 @@
             dialog.modal('show');
             field.focus();
             dialog.on('click', '.btn-primary', function () {
+                var backdrop = $('.modal-backdrop');
                 def.resolve(field.val(), field, dialog);
                 dialog.remove();
-                $('.modal-backdrop').remove();
+                backdrop.remove();
             });
         });
         dialog.on('hidden.bs.modal', function () {
+            var backdrop = $('.modal-backdrop');
             def.reject();
             dialog.remove();
-            $('.modal-backdrop').remove();
+            backdrop.remove();
         });
         if (field.is('input[type="text"], select')) {
             field.keypress(function (e) {