Philadelphia Flyers forward Trevor Zegras received a minor penalty for “improperly wearing the equipment” in a preseason game Thursday night after being warned about tucking his jersey into his pants. The penalty came in the second period of the Flyers’ 2-0 home win over the Boston Bruins.

“My jersey was tucked in at the start of my shift. So after a warning, they said that’s an automatic penalty,” Zegras said. “I started the game with it tucked, which is obviously how I usually play.”

Scouting The Refs reported that Zegras was the first player penalized for a jersey tuck violation since 2013. Rule 9.5 requires protective equipment to be worn under the uniform, while Rule 12.1 calls for a warning before a minor penalty. Flyers coach Rick Tocchet said teams were told proper equipment use would be emphasized this season.

The last crackdown came in 2013-14, and Washington Capitals star Alex Ovechkin called it “kind of stupid.”