diff --git a/src/rup.select.js b/src/rup.select.js
index 44f8003f..75498b97 100644
--- a/src/rup.select.js
+++ b/src/rup.select.js
@@ -39,7 +39,7 @@
     if (typeof define === 'function' && define.amd) {
 
         // AMD. Register as an anonymous module.
-        define(['jquery', './rup.base', 'select2','./external/select2MultiCheckboxes'], factory);
+        define(['jquery', './rup.base', './rup.message', 'select2', './external/select2MultiCheckboxes'], factory);
     } else {
 
         // Browser globals