Experimental html5 validator bug?

Hello,
I was checking this website
<http://theirupb.byethost24.com/upb/viewtopic.php?id=1&t_id=1> (I know
that code is horrible, but it is not imoprtant in this case)
Experimental html5 validator should accept target="_blank" , but it display:
/Line 77, Column 128/: No space between attributes.

|…ofile.php?action=get&amp;id=1 target='*_*blank'><strong>Halamix2</strong></a> on…|

Can you fix it?
Piotr Halama (Halamix2)