diff --git a/usr.bin/nfsstat/nfsstat.1 b/usr.bin/nfsstat/nfsstat.1
index 1d6b22702732..4a37fdc7529a 100644
--- a/usr.bin/nfsstat/nfsstat.1
+++ b/usr.bin/nfsstat/nfsstat.1
@@ -28,7 +28,7 @@
 .\"     From: @(#)nfsstat.1	8.1 (Berkeley) 6/6/93
 .\" $FreeBSD$
 .\"
-.Dd December 21, 2019
+.Dd December 31, 2019
 .Dt NFSSTAT 1
 .Os
 .Sh NAME
@@ -40,8 +40,6 @@ statistics
 .Nm
 .Op Fl -libxo
 .Op Fl cdEemszW
-.Op Fl M Ar core
-.Op Fl N Ar system
 .Op Fl w Ar wait
 .Sh DESCRIPTION
 The
@@ -94,17 +92,14 @@ or
 .Fl E
 can be specified.
 .It Fl M
-Extract values associated with the name list from the specified core
-instead of the default
-.Pa /dev/kmem .
+Deprecated and ignored.
 .It Fl m
 Report the mount options for all NFS client mounts.
 This option overrides all others and
 .Nm
 will exit after completing the report.
 .It Fl N
-Extract the name list from the specified system instead of the default
-.Pa /boot/kernel/kernel .
+Deprecated and ignored.
 .It Fl s
 Only display server side statistics.
 .It Fl W
@@ -134,13 +129,6 @@ See
 .Xr xo_parse_args 3
 for details on command line arguments.
 .El
-.Sh FILES
-.Bl -tag -width ".Pa /boot/kernel/kernel" -compact
-.It Pa /boot/kernel/kernel
-default kernel namelist
-.It Pa /dev/kmem
-default memory file
-.El
 .Sh SEE ALSO
 .Xr fstat 1 ,
 .Xr netstat 1 ,