At a rally on Saturday, Donald Trump had a bit of a slip-up, calling his current favourite Elon Musk “Leon” instead. This mix-up comes just hours after Musk accepted Trump’s proposal to chair a new “government efficiency” council, humorously dubbed D.O.

G.E. for Dogecoin.

Trump was discussing how SpaceX would be sending a spacecraft to rescue stranded NASA astronauts after Boeing’s failure. Fans quickly picked up on the slip, with some jokingly suggesting Trump might be slurring his words again. Donald Trump mixes up Musk’s name at rally “Boeing, I shouldn’t say anything there is a beautiful Boeing plane right there,” Trump was heard speaking to his Mosinee, Wisconsin crowd referring to his Trump Force One.

“But, ehh,” he added, “Boeing had a little hard time, so they are going to save—Leon is going to send them a rocket." The former president was trying to hype up SpaceX’s Crew Dragon mission, which aims to rescue NASA astronauts Sunita Williams and Butch Wilmore . They are stranded on the ISS after Boeing’s starliner experienced a propulsion system issue and had to make an emergency departure, leaving its two crew members behind.

NASA deemed it too unsafe to bring the astronauts back on the Boeing vehicle. Also read: Prince Harry’s US green card could be a financial ‘dagger’ for royals: Why he may be on a rare golden visa “He looks forward to it, that’s all he thinks about is things like that,” Trump added. The blunder followed Tru.