diff --git a/sbin/ipfw/ipfw.8 b/sbin/ipfw/ipfw.8
index eb9e92b17cac..e0c8055d17da 100644
--- a/sbin/ipfw/ipfw.8
+++ b/sbin/ipfw/ipfw.8
@@ -931,8 +931,8 @@ A
 may be specified by name or number.
 .It Cm jail Ar prisonID
 Matches all TCP or UDP packets sent by or received for the
-jail whos prison ID is 
-.Ar prisoniD .
+jail whos prison ID is
+.Ar prisonID .
 .It Cm icmptypes Ar types
 Matches ICMP packets whose ICMP type is in the list
 .Ar types .