Wiki plugin: Removing the sidebar page's link from the sidebar

I have created a few articles in the wiki then created a sidebar page. A link to itself was then appearing in the sidebar. I think it should be avoided - especially as a link to edit itself is already in the sidebar.
I have made a change to the function getPagesList() from the Wiki class in the file:
/application/plugins/wiki/models/Wiki.class.php
by just adding a condition:
AND p.project_sidebar = 0