Excluding paths with mtree

[Norberto Meijome]

Hi all,
I must be slower than normal today... how can I get mtree to ignore a
subdirectory of the path I'm telling it to map?

I'm doing:
/usr/sbin/mtree -K sha256digest -x -c -p /usr/

but i dont want it to map /usr/home.

I tried -X /usr/home, and creating /tmp/exc with /usr/home in it, and having
-X /tmp/exc in the cmd line... no luck,

running 6.1 on i386.

TIA!
Beto