Facebook users who do not fit any of the 58 gender identity options offered by the social media giant are now being given a rather big 59th option: fill in the blank.

A Facebook announcement published online tells users that if they do not identify with the pre-populated list of gender identities, they can add their own.

Facebook software engineer Ari Chivukula, who identifies as transgender and was part of the team that made the free-form option, says the change may lead to more widespread acceptance.

Last February, Facebook expanded gender identity from male and female to a list of dozens of options, including androgyne, gender fluid and transgender. Those choices will all still be available.

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