"We deeply regret this unfortunate error and are taking immediate action to remedy this. Parents are advised that the misprinted, incorrect website is not appropriate for children," the company said in a statement.

Wicked will be this holiday season's biggest box office draw, expecting to fly in millions in its opening weekend. Mattel and other companies dropped merchandise to honor its release, and celebrities like Kim Kardashian hosted early viewing parties with their families.

Mattel has some wicked problems after a packaging error occurred with the upcoming movie's collectible dolls. "Wicked" dolls manufactured by Mattel misprinted the promotional movie website wickedmovie.com. The misprint, which left the word movie out of the URL, directed consumers to an adult-rated website.