Hillary Clinton has warned Kamala Harris of the risks of an unexpected and game-changing story in the final month before the presidential election—an event often dubbed an October Surprise.

Hillary Clinton pointed to ‘dangerous’ claims about her which emerged in the final weeks of the 2016 election cycle when issuing her warning Friday.

Clinton referenced false allegations that spread during her 2016 presidential campaign and came to be known as “Pizzagate.” The baseless rumors purported Clinton and other Democrats had ties to a child sex-trafficking ring headquartered in a D.C. pizza joint.