Org-mode links to other Org files?

In emacs, I can auto-fill the [[file:...]] style link from a set of known files. The problem is when linking to org-mode files, it looks something like [[file:foo.org]] but this doesn't work with blot's internal linking system. So I have to remove the .org to something like [[file:foo]] which does work with blot. The problem now is that org-follow-link does not resolve without the missing extension.