Change the minimum search length in this forum

In our forum, we can't search for something like "EU". It will return with "One or more of your search terms were shorter than the minimum length. The minimum search term length is 4 characters."

Please do the needful to decrease this. Checked the mybb site - http://community.mybb.com/thread-130170.html
Since the hosting is yours, you should be able to setup MySQL to suite this..