I don't really see anything obviously wrong with your configuration. And the deployers are not special MC POJOs. They have the same characteristics as the normal MC beans. The only distinguishing factor, is that they get added to the DeployersImpl through a callback. Are you sure, that the MC is picking up this exact file? Or is it picking up some other -jboss-beans.xml which does not configure the "constructor" in the xml. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4241236#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...