XHTML DTD problem?

The following DTD, taken straight from the W3 website:

<!DOCTYPE html
   PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
   "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">

Does the following to the validator:

Uh oh! I got the following unknown error:
/usr/local/bin/nsgmls:http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd:236:
27:E: omitted tag minimization parameter can be omitted only if "OMITTAG NO"
is specified on the SGML declaration Please make sure you specified the
DOCTYPE properly! 

Am I doing something wrong?

Received on Monday, 7 February 2000 15:30:26 UTC