Donald Trump drew laughter at the annual white-tie Al Smith Dinner Thursday night for joking about his promise to jail his Democratic opponent if elected president.

“I have no doubt that Hillary Clinton is going to laugh quite a bit tonight, sometimes even at appropriate moments,” Trump started out during his roast of Hillary Clinton.

The Republican presidential nominee joked that Clinton had been very kind to him for most of the evening despite how heated their final presidential debate was the night before.

“She’s very nice to me,” he told the crowd. “In fact, she bumped into my before we came up on the dais and said, ‘Pardon me.’”

Trump has promised to appoint a special prosecutor to investigate his opponent if he’s elected president on Nov. 8. During the second debate earlier this month he said the former secretary of state would be behind bars if he were in charge of enforcing the law.