hex[40] = 0;
                if (get_sha1_hex(hex, sha1))
                        die("internal error");
-               if (has_sha1_pack(sha1, NULL))
+               if (has_sha1_pack(sha1))
                        (*packed_loose)++;
        }
 }
                OPT_END(),
        };
 
-       argc = parse_options(argc, argv, opts, count_objects_usage, 0);
+       argc = parse_options(argc, argv, prefix, opts, count_objects_usage, 0);
        /* we do not take arguments other than flags for now */
        if (argc)
                usage_with_options(count_objects_usage, opts);