Comment # 2 on bug 1037139 from Dominique Leuenberger

(In reply to Marcus Meissner from comment #1)
> it is a false warning, having it not specified is ok-ish.
> 
> a local user can override it locally.

The warning won't disappear until the security of this handler is approved
(which in turn probably will take a rewrite/new architecture)

This is still tracked in bug 744251 - marking this one here (about the warning)
as WONTFIX