Erratum for lexical representation for positiveInteger

In [1], the description of positiveInteger says optional + then any number 
of [0-9].

Shouldn't it be optional +, any number of zeroes, a [1-9], then any number 
of [0-9]? 

As described, positiveInteger seems to permit 0.

[1] 
http://www.w3.org/TR/2004/REC-xmlschema-2-20041028/datatypes.html#positiveInteger

Thanks,
John M. Boyer, Ph.D.
STSM, Interactive Documents and Web 2.0 Applications
Chair, W3C Forms Working Group
Workplace, Portal and Collaboration Software
IBM Victoria Software Lab
E-Mail: boyerj@ca.ibm.com 

Blog: http://www.ibm.com/developerworks/blogs/page/JohnBoyer
Blog RSS feed: 
http://www.ibm.com/developerworks/blogs/rss/JohnBoyer?flavor=rssdw