The NFL’s uniform police are restricting the Cowboys’ ability to honor Dallas police on their helmets.

The Cowboys have been wearing an “Arm in Arm” logo on their helmets during training camp as a show of support for the family members of the Dallas police officers who were killed during a protest last month. But the NFL informed the team Wednesday that it can’t wear the logo during preseason or regular-season games, according to the Dallas Morning News.

Before their first practice on July 30, Cowboys players walked onto the practice field arm-in-arm with Dallas Police Chief David Brown, Dallas mayor Mike Rawlings and family members of the slain officers. That’s when the decals featuring the star were placed on the back of the Cowboys’ helmets.

Other than practice, however, the only star on the Cowboys’ helmets will be the one that matches the star in the middle of their home field.

Cowboys executive vice president Stephen Jones understands the league’s decision.

“If you allow one,” Jones said, “then what do you do about every team that has a great reason to have something on their helmets?”