Thousands of Mattel’s “Wicked”-branded fashion dolls are flying off shelves, but not because of consumer demand.

Toy giant Mattel says it “deeply” regrets an error on the packaging of its “Wicked” movie-themed dolls, which mistakenly links toy buyers to a pornographic website.

In anticipation of a family-friendly box office smash, Mattel and others have produced a lot of merchandise for the film. The porn-linking toys were singing Glinda and Elphaba dolls. Retailers such as Target and Walmart have already delisted the toy from their online databases, but pictures of them still exist on eBay.