Sub-bullets using Verdana are not the right size in IE

Sub-bullets using Verdana are not the right size in IE

This might be really picky, but a person in QA pointed out to me that
sub-bullets are tiny when using Verdana in IE: http://jsbin.com/IQEmEq/2
The first list is using the default browser style, the second list is
using Verdana. Notice the sub-bullet in the first list has a normal size,
i.e. it is the same size as the other bullets in the list. But in the
second list the sub-bullet is smaller than the other bullets.
Chrome and Firefox seem to render all the bullets the same size regardless
of font, but IE for some reason doesn't.
How can I "fix" this?