If you look at Twitter, it seems as though the Super Bowl halftime show featuring Dr. Dre, Snoop Dogg, Mary J. Blige, Kendrick Lamar, and Eminem might go down as one of the most “epic” in history.

But, Eminem’s knee is also getting a lot of attention.

After he did “Lose Yourself,” he got down on one knee and lowered his head for 45 seconds while Dr. Dre started the next song.

Several media outlets reported that the NFL told him not to do that.

However, NFL spokesman Brian McCarthy told the Wall Street Journal, that “the league had no issues with the kneeling and that the league had seen Eminem do it multiple times in rehearsals.”

Former 49ers quarterback Colin Kaepernick first sparked international attention for taking a knee during the national anthem to protest racial injustice.

A rep for Eminem did not immediately respond to a request for comment.