Suicide Squad actress Margot Robbie appeared on last night’s post-Super Bowl edition of The Late Show With Stephen Colbert and shared a somewhat unexpected story involving misspelled tattoos. The 25-year-old actress, who plays Harley Quinn in the film, says she recently obtained a tattoo gun and gave 26 “Skwad” tattoos to the cast and crew of the action movie. But she made a pretty big mistake on one of them. Check out the clip below to see Robbie explain how it went wrong.

As she explains, Robbie gave the misspelled tattoo to a cast assistant for Jai Courtney, who portrays Boomerang in Suicide Squad. He was the first to raise his hand to get the Skwad tattoo. Whoops!

Here she is giving the tattoo as Quinn to Joel Kinnaman, who plays Rick Flag.

Suicide Squad is due for release on August 5, 2016. You can watch a pair of new TV spots here.

Disclosure: The Late Show With Stephen Colbert airs on CBS, whose parent company CBS Corp. also owns GameSpot.