Companies will soon be allowed to rent a small space on NBA jerseys, but only if their business doesn’t involve daily fantasy sports.

Last month, ESPN’s Darren Rovell reported that that NBA board of governors has greenlighted a three-year program that will allow teams to carry advertisements on their jerseys. Basically, businesses can buy a 2.5-inch-by-2.5-inch space on regular game-day jerseys starting with the 2017-18 season.

NBA Commissioner Adam Silver forecast the program to bring in as much as $100 million a year, still small compared to the league’s overall revenues which Silver expects to reach $7 billion next season. According to the report, the money from the jersey advertisement will be split with the players.

But there’s a catch: the league is restricting the companies who can advertise, and the restrictions apply to businesses involved with alcohol, tobacco, politics, media, Nike competitor, or gambling including daily fantasy sports sites such as DraftKings and FanDuel.