Facebook referrerType not marked as "social"


Hello all,
Forgive me if I’m asking this on the wrong forum.

I work with API. Live.getVisitorProfile API call returns visitor details.
If the visitor arrived from Facebook, the referralURL will be http://l.facebook.com/l.php?u=

The problem is , referralType is set to “website”, while it should be set to “social”.

I have set up a plugin that allows to edit list of search engines and social website, but nothing has changed.

I would appreciate any help.