diff --git a/js/prestashop-ui-kit.js b/js/prestashop-ui-kit.js
index 5e3dcea7..7e37c6f8 100644
--- a/js/prestashop-ui-kit.js
+++ b/js/prestashop-ui-kit.js
@@ -32,7 +32,7 @@ $.fn.pstooltip = $.fn.tooltip;
    */
   var initSelect2 = function () {
     jQuery('[data-toggle="select2"]').each(function () {
-      var newObj = {minimumResultsForSearch: -1};
+      var newObj = {minimumResultsForSearch: -1, theme: "bootstrap4"};
 
       for (var attr in $(this).data()) {
         if (!attr.localeCompare('templateresult')) {