Wells Fargo’s board of directors has amended the company’s by-laws to require the separation of the chairman and CEO roles and for the chairman and vice chairman of the board to be independent directors.

The board approved the by-law amendments, which became effective on November 29, 2016.

“The board previously acted to elect an independent chairman to lead the board and we believe formalizing this structure is the right decision at this time for the company and its investors, customers and team members,” said Stephen Sanger, chairman of the board. “Efforts to restore the trust of our customers and team members are well underway and will continue until we have fully addressed the issues surrounding retail banking sales practices. While the investigation of these practices and related matters by the independent directors continues in earnest, we believe this action will enhance the board’s independence and its oversight of the company’s management, and we appreciate the feedback that we received from our investors on this matter.”