diff --git a/share/man/man9/VFS_ROOT.9 b/share/man/man9/VFS_ROOT.9
index 32b4f2f62147..7af1fe6d9394 100644
--- a/share/man/man9/VFS_ROOT.9
+++ b/share/man/man9/VFS_ROOT.9
@@ -28,7 +28,7 @@
 .\"
 .\" $FreeBSD$
 .\"
-.Dd July 24, 1996
+.Dd August 26, 2006
 .Os
 .Dt VFS_ROOT 9
 .Sh NAME
@@ -39,14 +39,22 @@
 .In sys/mount.h
 .In sys/vnode.h
 .Ft int
-.Fn VFS_ROOT "struct mount *mp" "struct vnode **vpp" "struct thread *td"
+.Fn VFS_ROOT "struct mount *mp" "int flags" "struct vnode **vpp" "struct thread *td"
 .Sh DESCRIPTION
 Return a locked vnode for the root directory of the file system.
 .Pp
 Its arguments are:
-.Bl -tag -width vpp
+.Bl -tag -width flags
 .It Fa mp
 The file system.
+.It Fa flags
+The lock type. Could be
+.Dv LK_EXCLUSIVE
+or
+.Dv LK_SHARED .
+File system is free to ignore the
+.Fa flags
+argument and instead acquire an exclusive lock.
 .It Fa vpp
 Return parameter for the root vnode.
 .It Fa td