strange static assert failure

[Basile B. via Digitalmars-d-learn]

I played with some strange stuff that are allowed, i.e "super" 
and "this" as BasicType, when I've reached this:

class B
{
    super ringuard(){return null;}
    void foo()
    {
        auto crate = ringuard();
        pragma(msg, typeof(crate));
        static assert(typeof(crate).stringof == Object.stringof);
        static assert(is(crate == Object));
    }
}
The second assert fails. Do you know why ?