OLYMPIA, Wash. (AP) — Washington has become the 10th state to prohibit homicide defendants from claiming a defense based on panic over a victim’s sexual orientation or gender identity.

Gov. Jay Inslee signed the measure Thursday. It takes effect in June.

Nine other states — California, Connecticut, Hawaii, Illinois, Maine, Nevada, New Jersey New York and Rhode Island — have already banned the use of gay or transgender panic as a legal defense.

The Washington state measure is named after Nikki Kuhnhausen, a transgender teen who was killed last year, The Columbian reported. It was approved with bipartisan support in the state House and the Senate, though some lawmakers questioned if the legislation was necessary since a panic defense has never been used in Washington. Read more via AP