The climate is officially changing, as the eternally wise petrochemical billionaire Charles Koch, a notorious climate denial funder, has declared it to be so.

Koch Industries’ Environmental, Health and Safety Director Sheryl Corrigan made the comment about Koch’s climate beliefs at a recent event hosted by The Wall Street Journal, reports Environment & Energy Publishing. So sayeth Koch, and it shall be true:

“Charles has said the climate is changing. So, the climate is changing,” Corrigan said. “I think he’s also said, and we believe, that humans have a part in that. I think what the real question is … what are we going to do about it?”

Koch has been see-sawing over climate change for years. At one point, Koch acknowledged that “it’s been warming some” to The Washington Post in 2015, then quickly qualified his statements an interview with Forbes, saying he believes “it’s not certain” that humans are to blame for climate change. This statement seems to be the first time Koch has been said to attribute human activity to global warming.

But throughout it all, Koch has been actively supporting lobbyists and climate skeptics. While blasting “crony capitalism,” he and his political network has said they plan to spend nearly $900 million during the 2016 presidential election race. His roster of climate-related fundees includes scientists who are critical of climate science and members of Congress who signed a pledge promising to vote against climate legislation in 2013.

Koch hasn’t publicly commented on Corrigan’s statements just yet, so we can’t be sure that the climate will still be changing tomorrow.