The board of Zions Bancorporation, a powerful Utah-based bank holding company, has pledged to clarify its discrimination policy to protect gay and transgender employees, reports the Associated Press.

Spokesman Rob Brough said that "initially the board felt that since Zions already had a zero-tolerance policy in place prohibiting any kind of discrimination, the additional language wasn't necessary." Several weeks later, however, the board has reversed its stance and plans to amend Zions' equal employment opportunity policy. This follows complaints by investors represented by New York City comptroller John C. Liu, who said the company wasn't doing enough to protect employees.