President Donald Trump told an audience during an event in North Carolina on Friday that his golf course in Charlotte sat along the “largest man-made lake in the world by far.”

The president is referring to Lake Norman, which is, in fact ― get ready for a shocker ― not the world’s largest man-made lake. President Trump ... has lied.

The Charlotte Observer called out the president’s mistake very quickly, pointing out that not only is Lake Norman not the world’s largest man-made lake, it’s not even close. Lake Norman isn’t even in the top 10 largest reservoirs in just the U.S., according to Massachusetts water engineering firm Tata And Howard.

Lake Kariba, on the border of Zambia and Zimbabwe, is generally considered to be the largest man-made lake (or reservoir) in the world by volume (though sources vary between calling it “the largest” and “one of the largest.”)

The point being, Lake Norman is not.

We’re sure the president will issue a correction soon and be more careful with his grand unsubstantiated claims in the future.

This story has been updated to include more detail about Lake Kariba.