Floyd Mayweather Jr. has settled with the SEC after failing to report payments for promoting cryptocurrency entities on Twitter, The Associated Press reported.

Mayweather agreed to pay a $300,000 penalty, give up another $300,000 and pay $14,775 in interest under the settlement, as the SEC claimed Mayweather failed to report three separate promotion deals that paid him a total of $300,000.

Among the securities Mayweather touted on his Twitter account (which has almost 8 million followers) was Centra Tech, which is facing fraud charges of its own from the SEC.

You can call me Floyd Crypto Mayweather from now on #HubiiNetwork #ICO starts tomorrow! Smart contracts for sports?! #CryptoMediaGroup #ad? pic.twitter.com/25GoMPuS7r

— Floyd Mayweather (@FloydMayweather) August 23, 2017

Music producer and artist DJ Khaled was also fined by the SEC for promoting Centra. His settlement requires him to pay more than $150,000 in return payments, penalties and interest.