Their first fight ended in a draw, so Jon Fitch and B.J. Penn will do it all over again.
The welterweights have agreed to meet at UFC 132 in July to settle the score from the original fight that took place in February.
The UFC announced the match-up on Thursday.
“Both fighters look to keep it out of the hands of the judges this time,” said UFC President Dana White about part 2 of Penn vs. Fitch.
Also announced for the main card at UFC 132 will be a lightweight match-up between two of the best in the division with George Sotiropoulos looking to rebound from a recent loss to take on Evan Dunham.
Sotiropoulos looked like he was on the fast track to a title shot before running into Dennis Siver in Australia last month. Dunham was on a similar path before first having the bad judging rob him in his fight against Sean Sherk, and then getting knocked out by Melvin Guillard in January.
More bouts are expected to be announced for UFC 132 in the coming weeks.