GOP presidential front-runner Donald TrumpDonald John TrumpDems seek to chip away at Trump’s economic record Trump to sign directive to reform commercial space regulations Trump on collision course with Congress on ZTE MORE is accusing CNBC, the host of Thursday night’s third Republican debate, of being “very unfair.”

The billionaire tweeted on Wednesday that he is “looking forward to what I am sure will be a very unfair debate!”

Trump and several other GOP candidates threatened to boycott the debate earlier this month if the network did not change its format. Those candidates were annoyed that the debate did not include opening or closing statements and did not have a time limit.

CNBC caved in to the demands and agreed to alter the format of the debate.

The top 10 GOP primary candidates will square off on the campus of the University of Colorado in the main debate at 8:00 p.m.

The undercard debate, featuring four additional candidates, begins at 6:00 p.m.