remove '- pages' as link in the menu

Hello dear WP-People,

In the ‘Footer’ of my website will be the Copyrightstuff (copyright?2012 etc) and a link called ‘impressum. I’ve putted the following code into the footer.php:

<?php wp_list_pages('include=118' ); ?>

I expected to see this:

– impressum

But got this:
– pages
– impressum

‘Pages’ itself is not clickable/ no link. What can I add to the code, that ‘ – pages ‘ will disappear?
Thank you a lot for your help.