Deleware just became the 14th state, plus Washington, D.C., to ban conversion therapy.

The bill was signed into law Monday night by Governor John Carney. Going forward, licensed mental health professionals will no longer be allowed to subject children to the discredited practice. Medical and mental health professionals have largely condemned conversion therapy, saying that the practice of trying to change someone’s sexual orientation is proven to be ineffective and can cause psychological harm.

The new law reportedly outlaws the practice as unprofessional conduct for licensed medical and mental health professionals in Delaware. It also prevents the Department of Services for Children, Youth and Their Families from recommending conversion therapy to families.

The harm that can come from conversion therapy has been highly publicized in the last few years, with the practice being the subject of two upcoming movies Boy, Erased and The Miseducation of Cameron Post.

There's some discrepancy on the state of New York's stance on conversion therapy, but Delaware joins other states in banning conversion therapy, which include: Connecticut, California, Nevada, New Jersey, Oregon, Illinois, Vermont, New Mexico, Rhode Island, Washington, Maryland, Hawaii, New Hampshire and Washington, D.C.

"I’m thankful for the legislators and advocates who moved SB 65 forward," Carney said on Twitter. "Thank you specifically to Rep. Heffernan and Sen. McDowell for their leadership on this important issue, and to all members of the General Assembly who voted to make this new law a reality."