Citing concerns about increasing drunken driving, Gov. Jerry Brown vetoed a bill Friday that would have allowed alcohol to be served two hours later in the morning until 4 a.m. in nine cities, including Oakland, San Francisco and Los Angeles.

“Without question, these two extra hours will result in more drinking,” Brown said in his veto message.

While acknowledging that businesses in those cities saw that as an opportunity for more revenue, Brown said the downside of more drunkenness wasn’t worth it.

“I believe we have enough mischief from midnight to 2 without adding two more hours of mayhem,” Brown’s veto message said.

Senate Bill 905 by Senator Scott Wiener, D-San Francisco, would have required the Department of Alcoholic Beverage Control, to conduct a pilot program for extended hours of alcohol sales in the nine cities.

Those cities were Cathedral City, Coachella, Long Beach, Los Angeles, Oakland, Palm Springs, Sacramento, San Francisco, and West Hollywood.