It may not be a very Merry Christmas for NBC: The network’s annual Christmas in Rockefeller Center special could be axed this evening due to a possible broadcasters’ union strike.

The New York City chapter of the National Association of Broadcast Employees and Technicians is threatening to boycott the popular television special of the Rockefeller Center Christmas tree-lighting ceremony unless NBC’s entertainment division restarts stalled contract talks, The Associated Press has learned.

Tonight’s special is set to feature live performances by Aretha Franklin and Barry Manilow.