Renaming category

Renaming standard post category:

function revcon_change_cat_object() {
    global $wp_taxonomies;
    $labels = &$wp_taxonomies['category']->labels;
    $labels->name = 'Kategorie';
    $labels->singular_name = 'Kategorie';
    $labels->add_new = 'Add Kategorie';
    $labels->add_new_item = 'Add Kategorie';
    $labels->edit_item = 'Edit Kategorie';
    $labels->new_item = 'Kategorie';
    $labels->view_item = 'View Kategorie';
    $labels->search_items = 'Search Kategorien';
    $labels->not_found = 'No Kategorie found';
    $labels->not_found_in_trash = 'No Kategorie found in Trash';
    $labels->all_items = 'Alle Kategorien';
    $labels->menu_name = 'Kategorie';
    $labels->name_admin_bar = 'Kategorie';
}
add_action( 'init', 'revcon_change_cat_object' );