diff --git a/tools/tools/mctest/mctest.1 b/tools/tools/mctest/mctest.1
index 3ca57eee013e..5eb7e5b4fecd 100644
--- a/tools/tools/mctest/mctest.1
+++ b/tools/tools/mctest/mctest.1
@@ -59,9 +59,9 @@ The options are as follows:
 .Bl -tag -width ".Fl d Ar argument"
 .It Fl i Ar interface
 Network interface, which can be found with ifconfig(1).
-.It Fl i Ar group
+.It Fl g Ar group
 Multicast group
-.It Fl i Ar base port
+.It Fl b Ar base port
 Port on which to listen
 .It Fl s Ar size
 Packet size in bytes.