President Donald Trump proposed Coca-Cola replace corn syrup in its U.S. drinks with cane sugar, a move upsetting corn trade groups.

President Trump said on Wednesday that he had spoken to the Coca-Cola Company about using “REAL cane sugar in Coke” in the United States and that the company had agreed to begin adding it.

The use of high-fructose corn syrup is controversial, though the FDA has previously said it found evidence that it’s more dangerous than cane sugar.