The Toronto Star is reporting that Marnina Norys, a 39-year-old Ph.D. student in Canada, was stopped by airport security and prohibited from wearing her necklace into the terminal.

Last week, security officials at Kelowna International Airport in British Columbia forced Norys to remove a silver necklace with a pendant in the shape of a Colt .45 pistol. The 2-inch pendant apparently was deemed a security risk.

An airport security official told Norys that replica firearms are banned from planes and that she’d have to check her jewelry. According to the Star, Dave Smith, director of screening operations with the Canadian Air Transport Authority (CATSA), issued a written apology to Norys and wrote that the screening officer “made a judgment call, rather than refer to CATSA’s standard operating procedures. In retrospect, your revolver-shaped pendant is not a threat and should have been allowed on board the aircraft.”