diff -up nfs-utils-1.3.0/utils/mountd/mountd.c.orig nfs-utils-1.3.0/utils/mountd/mountd.c
--- nfs-utils-1.3.0/utils/mountd/mountd.c.orig	2016-02-11 09:57:51.376317000 -0500
+++ nfs-utils-1.3.0/utils/mountd/mountd.c	2016-02-11 10:02:54.377956000 -0500
@@ -911,7 +911,8 @@ usage(const char *prog, int n)
 "	[-o num|--descriptors num] [-f exports-file|--exports-file=file]\n"
 "	[-p|--port port] [-V version|--nfs-version version]\n"
 "	[-N version|--no-nfs-version version] [-n|--no-tcp]\n"
-"	[-H ha-callout-prog] [-s|--state-directory-path path]\n"
-"	[-g|--manage-gids] [-t num|--num-threads=num] [-u|--no-udp]\n", prog);
+"	[-H prog |--ha-callout prog] [-r |--reverse-lookup]\n"
+"	[-s|--state-directory-path path] [-g|--manage-gids]\n"
+"	[-t num|--num-threads=num] [-u|--no-udp]\n", prog);
 	exit(n);
 }