1 files changed, 1 insertions, 1 deletions
diff --git a/zcat.cc b/zcat.cc
index d349383..e4f7956 100644
--- a/zcat.cc
+++ b/zcat.cc
@@ -108,7 +108,7 @@ void show_help()
                "  -b, --number-nonblank      number nonblank output lines\n"
                "  -e                         equivalent to '-vE'\n"
                "  -E, --show-ends            display '$' at end of each line\n"
-               "  -M, --format=<list>        exclude formats not in <list>\n"
+               "  -M, --format=<list>        process only the formats in <list>\n"
                "  -n, --number               number all output lines\n"
                "  -N, --no-rcfile            don't read runtime configuration file\n"
                "  -O, --force-format=<fmt>   force given format (bz2, gz, lz, xz)\n"