Canadian Prime Minister Mark Carney fired back at President Donald Trump‘s move to rename Lake Ontario to “Lake America” during the countries’ trade war, pointing to the centuries-old, Indigenous root of the lake’s original name.

“The name Lake Ontario comes from the Wendat word Ontari’io, which, appropriately, means ‘the lake is beautiful, the lake is big,'” Carney posted on X Thursday. “The name is more than 400 years old, predating both the Confederation of Canada and the Declaration of Independence of the United States of America.”