Sen. Lindsey Graham (R-SC) encouraged President Donald Trump to say things about a fatal respiratory virus that are actually based on science instead of a “hunch.”

On Thursday, reporters asked Graham for his response to Trump’s efforts to minimize the World Health Organization’s (WHO) estimated 3.4% death rate of reported COVID-19 cases worldwide.

“I listen to the scientists when it comes to the numbers,” Graham said. “And I would encourage the President, if he’s going to report things, to make sure the science is behind what he’s saying.”

Trump had appeared on Fox News host Sean Hannity’s program the night before, during which the President asserted that the 3.4% figure “is really a false number.”

“Now this is just my hunch, but based on a lot of conversations with a lot of people that do this, because a lot of people will have this, and it’s very mild,” he told Hannity. “They’ll get better very rapidly, they don’t even see a doctor, they don’t even call a doctor, you never hear about those people.”

Watch Graham below: