Weird - I just tried and the same thing is happening for (i.e. I get no validation error) It seem to only happen for namespaced tags. i.e. <p style="xyz /> gives me a warning/error. <h:inputText readonly="true /> does not. kphilipp, please report this as a bug - we need to investigate that but looks like we have to live with that bug for CR1 ;( View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4197534#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...