“My fight is canceled but I’m still working,” the American wrote on social media, posting a photo from the gym.
That said, the Frenchman claims he is still going to participate in the numbered event.
“Guys, stay calm. I’m counting the days until UFC 299,” Saint-Denis wrote to concerned fans.
UFC officials have not yet commented on the information.
Dustin Porier, 34, last stepped into the octagon last July, losing by second-round knockout to Justin Gaethje in a challenger’s bout.
Benoit St. Denis, 28, is riding a streak of five early wins in the UFC, knocking out Matt Frevola in his last fight as early as the first round.
Dustin Porier and Benoit Saint-Denis are currently ranked third and eleventh in the UFC lightweight rankings, respectively.