Autoblog keyword filter whole word

I use Autoblog with keyword filtering, but it seems like it doesn't search by full words. For instance, if I have the keyword "flow" in the filter, it will return "flower" as acceptable, because "flow" is part of it. If I have the name "Klee" as keyword in filtering, it will also return results for "Kleenex". Am I missing some settings or addons, and if not, is there a way around this?