Search tokenizes on underscores

When I type in a search term with underscores FishEye seems to tokenize on the string on the underscores. This behaviour is the same when I quote the search term

For instance, I searched for:
share_list_complete

and got back:
share matched 194 revisions
list matched 9886 revisions
complete matched 953 revisions

Same results if the string is quoted. This isn't ideal behaviour when you're searching code.