Lyoto Machida is the latest star who’s been flagged for taking a banned substance, but the legend maintains he didn’t know he was taking a prohibited product.

Yesterday the UFC announced that Machida will no longer rematch Dan Henderson on Saturday, after “The Dragon” recently informed USADA that he had been taking a banned substance. In the announcement, it was relayed Machida had stated that he didn’t know he had been taking a product, which is on the banned substances list.

Since then, the 37 year-old fighter has posted a video on Facebook, where he repeated his claim that he was unaware he had been taking a prohibited product. According to a follow up report from MMA, Machida revealed that the substance in question is 7-Keto, which contains DHEA; a substance listed by USADA as an anabolic agent.

According to the aforementioned report, Machida also stated this:

“I’m here to tell you that I was caught by surprise by this news,” Machida wrote. “It has been very difficult for me. I’ve trained a lot for this fight, I’ve dedicated a lot with all my teammates. I want to tell you that I really didn’t know about this substance, so I listed it on my declaration form amongst everything else I was taking, and this substance was recently banned in 2016, so I take the blame for not knowing that, and I’d like to say I’m really sorry and apologize to my fans, teammates, and my family… I always try to play by the book, but unfortunately this happened.”

It will be interesting to see how these comments are greeted by fans. Machida did disclose he was taking 7-Keto, but on the other hand, fighters must take steps to ensure they’re not taking banned substances. A report from MMA says DHEA has been banned by the World Doping Agency since 2005.

Now it remains to see how extensive Machida’s suspension is. As a first time offender, he could be suspended for two years. But since he disclosed he was taking a banned substance, USADA may issue a shorter suspension.