President-elect Donald Trump is not a fan of Alec Baldwin's impersonation of him on "Saturday Night Live."

Trump has repeatedly called the show "unwatchable" and one-sided on Twitter. He tweeted Saturday night, "the Baldwin impersonation just can't get any worse. Sad."

In response to the tweet, Baldwin said he would stop his impression if Trump will release his tax returns.

...@realDonaldTrump



Release your tax returns and I'll stop.

Ha — ABFoundation (@ABFalecbaldwin) December 4, 2016

This isn't the first time the actor and Trump have engaged in a Twitter battle.

Baldwin tweeted a series of angry remarks at Trump after the President-elect called "SNL" "biased" earlier in November.