Tidy with Docbook

Hello,

For writing a thesis I use Tidy to clean up Conglomerate Docbook code 
invoking the following command:

tidy -o business-t.docbook -i -xml business-t.docbook

This strips spaces from elements and after elemens like:
<emphasis>hello </emphasis> world
to
<emphasis>hello</emphasis>world

In the mailinglist I read the -xml generates my problem, but how can I 
parse my Docbook document otherwise? Without the option the errors will 
fly over the screen.

Greetings,

Stefan de Konink