diff --git a/sbin/mount_unionfs/mount_unionfs.8 b/sbin/mount_unionfs/mount_unionfs.8
index 76a2856f483f..b9c7b193d925 100644
--- a/sbin/mount_unionfs/mount_unionfs.8
+++ b/sbin/mount_unionfs/mount_unionfs.8
@@ -181,7 +181,7 @@ accessible via
 .Xr unmount 2 ,
 .Xr fstab 5 ,
 .Xr mount 8 ,
-.Xr mount_null 8
+.Xr mount_nullfs 8
 .Sh BUGS
 THIS FILESYSTEM TYPE IS NOT YET FULLY SUPPORTED (READ: IT DOESN'T WORK)
 AND USING IT MAY, IN FACT, DESTROY DATA ON YOUR SYSTEM.  USE AT YOUR