I upvoted Greg's answer, because that is what I would do, if for some reason I could not ask the relevant authorities.
Your first step should be to get a copy of the thesis formatting guide or manual of your institution. Most universities have one.
Your second step, if this guide does not answer your question, should be to ask the examination authority of your institution.
Your third step, if the examination authority is unable or unwilling to provide a definite answer, should be to ask your professor(s).
If, for some unimaginable reason, you still have not been given an answer, do as Greg said.