Trump publicly denounced Musk during a tense Oval Office press conference on Thursday, saying that he was “disappointed” and “surprised” that the tech billionaire opposed his “big beautiful bill.” He went on to suggest that Musk has “Trump Derangement Syndrome”—an insult Trump typically hurls at his opponents and critics.

As President Donald Trump sat in the Oval Office on Thursday with Germany’s leader at his side, he lamented his soured relationship with Elon Musk, his adviser-turned-social media antagonist. Trump said he was “very disappointed” with Musk after the billionaire former backer lambasted the president’s signature bill of tax cuts and spending plans.