[NTG-context] Label to delete in the table of contents

Hello, For the title of the chapters I use the following command. \unexpanded\def\HeadTitle#1#2% {\framed [frame=off, width=fit, align=flushleft] {\color[darkgray]{\tfxx\cap\bf\labeltext{chapter}} \blank#1\blank#2} When I compile my project, I have the label "Chapitre" above the word "Sommaire" in the table of contents : how to delete it ? Thanks for your help Fabrice