IRS accepted my refund but I received my stimulus check in the mail

What do I do? I filed for the recovery rebate because my old bank returned the $600 to IRS and I filed for it on 1/15. But I got the $600 check from IRS on Monday 2/8 and now Wednesday 2/10 Turbo Tax says IRS accepted my filing. Don't they know they already sent me the $600?! I don't want them to send me a second one and get in trouble. What do I do?