Too dumb to 'make' documentation

[Molle Bestefich]

Hi ho.

I get this error when doing 'make' in wine docs under 'en':

===================================
docbook2txt winedev-guide.sgml
Using catalogs: /etc/sgml/sgml-docbook-3.1.cat
Using stylesheet: /usr/share/sgml/docbook/utils-0.6.12/docbook-utils.dsl#html
Working on: /root/wine-docs/en/winedev-guide.sgml
Unknown option -force_html
make: *** [winedev-guide.txt] Error 9
===================================

Eep.  Anyone got a solution?