United Airlines flyers will experience a little more peace in the air as the company steps up enforcement of its noise rules.

In a recent change to the air travel giant's Contract of Carriage — essentially United's Terms and Conditions for ticket holders — the airline reserves the right to remove, and even ban, passengers who do not use headphones to listen to their music, movies, and social media feeds.

According to the United contract's Refusal of Transport rule, the company has the "right to refuse transport on a permanent or temporary basis or shall have the right to remove from the aircraft at any point, any passenger for the following reasons." Buried in the rule's safety provisions, which outline other reasons for removal such as inappropriate dress or carrying weapons on board, the list now includes "passengers who fail to use headphones while listening to audio or video content."

"We’ve always encouraged customers to use headphones when listening to audio content — and our Wi-Fi rules already remind customers to use headphones. It seemed like a good time to make that even clearer by adding it to the contract of carriage," said United spokesman Josh Freed in a statement to the press.

Most carriers have policies that urge fliers to use headphones during flights. Southwest, for instance, lists headphones as a requirement on its website FAQ. Frontier also includes headphone requirements in its baggage policy, MSN reported. United appears to be the first to include headphone wearing in its passenger contract with explicit means to enforce the policy.

Across the industry, more and more air travelers are reporting passenger disruptions on flights, including violent altercations with fellow flyers and airline staff.