Republican presidential candidate Donald Trump criticized Sunday how the Republican National Committee distributed tickets to the GOP debate over the weekend.

Trump was booed multiple times Saturday at the CBS debate, which the businessman chalked up to being in a room with a crowd of donors. He repeatedly said at the debate that he is self-funding his campaign.

Here’s what he had to say:

Loved the debate last night, and almost everyone said I won, but the RNC did a terrible job of ticket distrbution. All donors & special ints — Donald J. Trump (@realDonaldTrump) February 14, 2016