You can do something like this instead: // In the callback for your add_meta_boxes action global $current_screen; if( post_type_supports( 'feature-name', $current_screen->post_type ) ) { add_meta_box(...); } On Sep 30, 2010 5:56 PM, "John Blackbourn" <johnbillion+wp at gmail.com<johnbillion%2Bwp at gmail.com>> wrote: