diff --git a/scm-webapp/src/main/webapp/resources/js/sonia.user.js b/scm-webapp/src/main/webapp/resources/js/sonia.user.js
index 25551c8ed1..7c86c5d0b5 100644
--- a/scm-webapp/src/main/webapp/resources/js/sonia.user.js
+++ b/scm-webapp/src/main/webapp/resources/js/sonia.user.js
@@ -124,7 +124,8 @@ Sonia.user.FormPanel = Ext.extend(Sonia.rest.FormPanel,{
       items: [{
         fieldLabel: 'Name',
         name: 'name',
-        allowBlank: false
+        allowBlank: false,
+        readOnly: this.item != null
       },{
         fieldLabel: 'DisplayName',
         name: 'displayName',