Mark Cuban is speaking out about the dangers of the new rules for the Internet, saying it will “f*ck everything up”.

Billionaire investor and ABC “Shark Tank” star Mark Cuban unloaded on the Federal Communications Commission’s plan to fundamentally change how it oversees the open Internet.

“That will fuck everything up,” said the voluble Cuban in remarks Wednesday at the Code/Media conference at The Ritz-Carlton, Laguna Niguel, Calif.

In early February, FCC Chairman Tom Wheeler proposed tough new rules for Internet lines that would prohibit wired and wireless broadband providers from collecting payment to cut to the front of the line, or blocking and throttling lawful content and services.

Cuban said this bid to significantly expand the agency’s authority to regulate broadband providers is nothing more than an attack on giant media companies like Comcast*.

“Net neutrality is just a demonization of big companies,” Cuban said.

Read more: Red Code