diff --git a/js/src/select.js b/js/src/select.js
index cf7a1447..cf0d81a9 100644
--- a/js/src/select.js
+++ b/js/src/select.js
@@ -20,7 +20,7 @@ const Select = (($) => {
   const JQUERY_NO_CONFLICT = $.fn[JQUERY_NAME]
 
   const Default = {
-    requiredClasses: ['form-control||c-select']
+    requiredClasses: ['form-control||custom-select']
   }
 
   /**