XDL_MERGE_FAVOR_UNION),
                OPT_INTEGER(0, "marker-size", &xmp.marker_size,
                            "for conflicts, use this marker size"),
-               OPT__QUIET(&quiet),
+               OPT__QUIET(&quiet, "do not warn about conflicts"),
                OPT_CALLBACK('L', NULL, names, "name",
                             "set labels for file1/orig_file/file2", &label_cb),
                OPT_END(),