Missed this in the earlier commit. works now.

fixes #804
Erg: so I think that's probably an over-eager search-and-replace, but I think it's also in the right direction: Going forward, I think it'd be good to avoid just referring to something as "id": Is it actually a slug, or actually a PID? If someone else wants to grab this and revert that line, feel free, or I'll try to fix it when I can concentrate.