Donald Trump confused Hillary Clinton’s running mate, Tim Kaine, with former New Jersey Gov. Thomas Kean, accusing one of them Wednesday of hiking taxes.

“Her running mate Tim Kaine, who by the way did a terrible job in New Jersey — first act he did in New Jersey was ask for a $4 billion tax increase and he was not very popular in New Jersey and he still isn’t,” Trump told a press conference in Doral, Fla.

Reporters corrected him and Trump acknowledged the gaffe.

“What? I mean Virginia,” Trump said.

Kean was the Garden State’s GOP governor from 1982 to 1990, but he’s best known as lead of the 9/11 Commission report.

Kaine, as governor, did in fact once propose a $4 billion tax increase in Virginia, according to fact-checking site PolitiFact.