President Barack Obama has joked about Treasury Secretary Jacob Lew’s infamously loopy signature.

“Jack assures me that he is going to work to make at least one letter legible in order not to debase our currency should he be confirmed as Secretary of the Treasury,” the president joked when he nominated Mr. Lew as the 76th secretary of the Treasury.

The agency hasn’t officially debuted his new penmanship, but a report out last week shows that it is at least evolving.