Simply, if you want to add your custom messages (in any locale) for authentication or whatever in Seam and you don't like (or you don't need) messages Seam adds as default, you should add in your resource bundle an empty key (Seam key message) in order to avoid that message be rendered. In the example you give you have the messages: | * Invalid username or password | * Login failed (added by Seam) | So if you don't want the second message appears, add this in your resource bundle: | org.jboss.seam.loginFailed | The key without value. HTH. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4031445#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...