[Zope] HTML validation failure with DTML-renders -- ends tag with />

I tried validating Zope's HTML for the first time and I have come across something strange... Zope inserts '/>' as the close, instead of just '>' for the automatic '<img src...' created when calling an image with DTML. Here is my code just to make sure I am not doing something stupid. bullet is a .gif. <dtml-var bullet> renders... <img src="zope/bullet" alt="" height="14" width="13" border="0" /> It also seems to do this for SiteRoot's insertion into the header. <base href="http://www.myzope.com/folder/folder/" /> -Trevor