diff --git a/scm-webapp/src/main/webapp/resources/js/override/ext.form.vtypes.js b/scm-webapp/src/main/webapp/resources/js/override/ext.form.vtypes.js
index df17eeaee7..91d5307577 100644
--- a/scm-webapp/src/main/webapp/resources/js/override/ext.form.vtypes.js
+++ b/scm-webapp/src/main/webapp/resources/js/override/ext.form.vtypes.js
@@ -75,7 +75,7 @@ Ext.apply(Ext.form.VTypes, {
   // username validator
   
   username: function(val){
-    return name(val);
+    return this.name(val);
   },
   
   usernameText: 'The username is invalid.'