Mattel was sued on Tuesday by a South Carolina mother for mistakenly putting a link to a pornographic website on packaging for dolls tied to the blockbuster movie Wicked.

In a proposed class-action filed in federal court in Los Angeles, Holly Ricketson said she had bought a Wicked doll for her daughter, who then visited an adult entertainment website through the link provided by the toymaker.

Ricketson said her daughter showed her hardcore photographs from the website and both were “horrified” by what they saw, suffering emotional distress.

The plaintiff said she would not have bought the doll had she known of the mistake, and Mattel has not offered refunds despite recalling the dolls on 11 November.

Mattel declined to comment on the lawsuit but said in a statement that sales of Wicked dolls with correct packaging had resumed in stores and online. It has expressed regret for the error.

The toymaker, based in El Segundo, California, had intended to link purchasers to the WickedMovie.com website, not to a similarly named website for people at least 18 years old.

Mattel recommends the dolls for children aged four and up.

Tuesday’s lawsuit seeks at least $5m in damages for people in the United States who bought Wicked dolls whose packaging included the errant link.

It accuses Mattel of negligence, selling products unfit for sale, and violating California consumer-protection laws.