America’s most successful critical flops, the Chainsmokers, hit Pittsburgh, Pennsylvania last night for a sold-out arena show. In what may be their most Spinal Tap moment yet, the band’s set ended with a banner that misspelled the name of the city hosting them. From a live review posted by Trib Live:

The night and their set ended with an encore of “Last Day Alive,” the last track of their first full-length album Memories…Do Not Open, released on April 7. The full band version of the song was met with much applause, before being dampened with a misspelled “Thank You Pittsburg” sign that came down at show’s end. It was obviously unfortunate, but even more so because Taggart made it a point to talk about how great the city had been to the Chainsmokers and not every city was as enthusiastic as Pittsburgh.

Everyone, including the band, tweeted through it.

https://twitter.com/TheChainsmokers/status/855975552309760002?ref_src=twsrc%5Etfw&ref_url=http%3A%2F%2Fwww.spin.com%2F2017%2F04%2Fchainsmokers-pittsburgh-spell-check%2F

https://twitter.com/shDell18/status/855972742931283968?ref_src=twsrc%5Etfw&ref_url=http%3A%2F%2Fwww.spin.com%2F2017%2F04%2Fchainsmokers-pittsburgh-spell-check%2F

This article originally appeared on Spin.