Warren Buffett is putting his money where his mouth is when it comes to Hillary Clinton.

In October, at Fortune’s Most Powerful Women summit, Buffett predicted that Hillary Clinton would be the next president of the United States. “Hillary Clinton is going to run, and she’s going to win,” Buffett said on stage.

Apparently, the prediction was more than just talk. According to Bloomberg, Buffett donated $25,000 in the third quarter to Ready for Hillary, a political organization that says it is laying the groundwork for a Clinton presidential run in 2016. That is the maximum the organization allows from a single donor. Overall, the group has raised $11 million.

Bloomberg says the donation was somewhat surprising because Buffett has criticized political action committees, like Ready for Hillary, in the past, and that he is known as a “political tightwad.” But Buffett has long been a supporter of Hillary Clinton. The Berkshire Hathaway CEO also backed Clinton’s 2008 election campaign and held fundraisers in her honor.

At Fortune’s Most Powerful Women’s conference, he added that he was willing to bet on a Hillary presidency. And now he has.