1 files changed, 1 insertions, 1 deletions
diff --git a/ztest.cc b/ztest.cc
index 600d32e..5377c6d 100644
--- a/ztest.cc
+++ b/ztest.cc
@@ -64,7 +64,7 @@ void show_help()
                "\nOptions:\n"
                "  -h, --help                 display this help and exit\n"
                "  -V, --version              output version information and exit\n"
-               "  -M, --format=<list>        exclude formats not in <list>\n"
+               "  -M, --format=<list>        process only the formats in <list>\n"
                "  -N, --no-rcfile            don't read runtime configuration file\n"
                "  -O, --force-format=<fmt>   force given format (bz2, gz, lz, xz)\n"
                "  -q, --quiet                suppress all messages\n"