My page is not valid xhtml 1.0 strict!

Line 62, column 52: the name and VI delimiter can be omitted from an attribute specification only if SHORTTAG YES is specified

…pe=“radio” name=“sitesearch” checked value=“DeluXe Host - 100MB Free Webspace - Home” />

the problem is the ‘checked’ attribute. no matter where i place, the next first letter of an attribute sure return an error as above.

what’s wrong?
thx in advance.