Hi there, I have defined a response filter for my web app (to uniformly add some information to all responses) and an error page for ServletExceptions which points to another servlet dedicated to handling exceptions. When an exception occurs, the response generated by the ErrorHandlerServlet does not get filtered, although I have defined a <filter-mapping> for the ErrorHandlerServlet. Is error handling no subject to filtering by specification (haven't found anything on this yet)? Have I forgotten something? Any hint appreciated Nils