As the Oval Office underwent a makeover on Donald Trump’s inauguration day, an iconic red button made a comeback, according to The Wall Street Journal. And no, it’s not for nuclear weapons. The Resolute Desk got retrofitted with Trump’s beloved Diet Coke button,

Every president since Ronald Reagan has left a note for his successor, and President Biden is the first to write a letter to someone who is both his successor and the predecessor who left a note for him.

The Diet Coke button is back.

President Biden wrote President-elect Donald Trump a letter as he departed the White House, keeping to tradition. As Biden awaited Trump’s arrival at the White House, he was asked if he wrote a letter to Trump.

President Trump found a handwritten letter from outgoing President Biden in the Oval Office’s Resolute Desk, continuing a longstanding tradition of presidential transitions.

As the Oval Office underwent a makeover on Inauguration Day, one iconic red button made a return to the Resolute Desk, where it was mounted in a wooden box