[NTG-context] TOC- removing Contents 0

[jbf]

A simple question, but I have not found an answer to it as yet:

\completecontent does everything it is supposed to, including providing 
the title 'Contents' on the ToC page, but it also gives me as the first 
line in the ToC:

Contents      0

In fact the ToC appears on page 1, but regardless of the page it is 
appearing on, is there a way I can prevent that line from being produced 
as part of the ToC? I assume it would be something I need to do in the 
following setup:

\setupcombinedlist
   [content]
   [list={chapter,section,title,subject,subsection}]
\setuplist[chapter][style=normal,alternative=b, before=]

Grateful for any help with this,

Julian