How to strip ;charset from Content-Type on 4.1.29?

[Bryan Field-Elliot]

When I call from a Servlet:

response.setContentType("text/xml");

Tomcat changes the header to read:

Content-Type: text/xml;charset=ISO-8859-1

The ;charset is killing us interoping with another vendor and they can't
change their code. I've tried:

response.setLocale(null);

but it bombs Tomcat.

This is Tomcat 4.1.29.

Any help would be appreciated.

Bryan