Katy Perry had a terrifying moment during her Lifetimes Tour stop in San Francisco when her flying butterfly prop malfunctioned mid-performance. While singing “Roar,” the platform suddenly jerked and dropped slightly, nearly unseating the pop star mid-air. In fan-captured footage, Perry is visibly shaken but manages to recover and finish the show.

Afterward, she posted a screenshot of her panicked expression, captioning it, “Goodnight San Fran.” This marks her second mid-air scare this tour.

Perry’s next show is in Seattle as she continues promoting her 143 album.