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 ?