President Donald Trump praised his new chief of staff John Kelly on Friday morning, seeming to push back on a new report that he’s already bridling at Kelly’s leadership.

“General John Kelly is doing a great job as Chief of Staff,” Trump said on Twitter. “I could not be happier or more impressed – and this Administration continues to get things done at a record clip. Many big decisions to be made over the coming days and weeks. AMERICA FIRST!”

His comments came hours after the Washington Post reported that “some of Trump’s friends fear that the short-tempered president is on an inevitable collision course with” Kelly, because “Trump chafes at some of the retired Marine Corps general’s moves to restrict access to him since he took the job almost a month ago.”

Kelly took over the top post after Reince Priebus was ousted in July. He’s so far used his new position to try to impose order on a chaotic White House.

Get our Politics Newsletter. The headlines out of Washington never seem to slow. Subscribe to The D.C. Brief to make sense of what matters most. Please enter a valid email address. Sign Up Now Check the box if you do not wish to receive promotional offers via email from TIME. You can unsubscribe at any time. By signing up you are agreeing to our Terms of Use and Privacy Policy . This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply. Thank you! For your security, we've sent a confirmation email to the address you entered. Click the link to confirm your subscription and begin receiving our newsletters. If you don't get the confirmation within 10 minutes, please check your spam folder.

Write to Tessa Berenson at tessa.berenson@time.com.