Missing Page for Content Link in Footer

I'm trying to add content links to the footer to mirror the links in my header.  For some reason my portfolio page isn't an option in the footer even though it is a linked page and the link works in my header.  Thanks for your help!

I'm not sure why that wouldn't be showing up, but you could just use a text link for this, and if it doesn't show up then you can just type in the URL slug for that page.