Wordpress category always show c

Part of category.php:	$cat = get_category(get_query_var('cat'),false); 	 	if ($cat->category_parent == 0) { 		$catID = $cat->cat_ID;		wp_list_categories('title_li=&hide_empty=0&child_of='.$catID);  	} else {		$parent = $cat->category_parent;		wp_list_categories('title_li=&hide_empty=0&child_of='.$parent);	}