As far as I can see this is not possible for me because I'm using MyFaces (and it is MyFaces who control the portlet). My guess is that MyFaces is doing the exact same thing as you are describing, but for some reason, the MyFaces portlet does not get the complete content <header-content> tag. Could it be that some of the content accidentally was filtered / escaped away and therefore lost before added to the HEADER_CONTENT property? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3979049#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...