The Hard Rock Hotel & Casino in Atlantic City doesn't have rhythm -- it's got "rhythem."

The soon-to-open casino, which spent $500 million to renovate the facility, installed a 30-foot sign shaped like a Gibson Les Paul guitar on Thursday morning without noticing the word "rhythm" was misspelled. The word on the guitar's rhythm and treble switch included the letter "E."

@amandahoovernj Our Vinyl Guy and QC are being hazed for the spelling error in creative, unmerciful ways. I can say for a fact that the 60ft version does not have the same error. #mortified pic.twitter.com/G9bu2gHr3f — Nick Mortensen (@nickmortensen) June 21, 2018

The guitar is one of two expected to go up at the new resort, with the second slated for installation Saturday at the resort's entrance.

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Hard Rock officials say the typo was corrected Thursday afternoon by removing the extra vinyl letter.

The Hard Rock Hotel & Casino will open at noon on June 28 the same day as the new Ocean Resort Casino.