diff --git a/sbin/mount/mount.8 b/sbin/mount/mount.8
index 53c211c2c5c9..b141b751836c 100644
--- a/sbin/mount/mount.8
+++ b/sbin/mount/mount.8
@@ -123,6 +123,10 @@ This option is useful for a server that has file systems containing
 binaries for architectures other than its own.
 .It nosuid
 Do not allow set-user-identifier or set-group-identifier bits to take effect.
+Note: this option is worthless if a public available suid or sgid
+wrapper like
+.Xr suidperl
+is installed on your system.
 .It rdonly
 The same as
 .Fl r ;
diff --git a/sbin/mount_ifs/mount.8 b/sbin/mount_ifs/mount.8
index 53c211c2c5c9..b141b751836c 100644
--- a/sbin/mount_ifs/mount.8
+++ b/sbin/mount_ifs/mount.8
@@ -123,6 +123,10 @@ This option is useful for a server that has file systems containing
 binaries for architectures other than its own.
 .It nosuid
 Do not allow set-user-identifier or set-group-identifier bits to take effect.
+Note: this option is worthless if a public available suid or sgid
+wrapper like
+.Xr suidperl
+is installed on your system.
 .It rdonly
 The same as
 .Fl r ;