Custom Post Type erscheint nicht

add_action( 'init', 'add_angebot' );
function add_angebot(){
 $args = array('label' => __('Angebote'),
           'singular_label' => __('Angebot'),
           'public' => true,
           'show_ui' => true,
           'show_in_menu' => true,
           'capability_type' => 'angebot',
           'hierarchical' => false,
           'rewrite' => array("slug" => "angebot"),
           'supports' => array('title','editor'),
           'menu_position' => 20
           );
  $supports = array('title','editor');
  register_post_type('angebot',$args); 
}