Lincoln, Neb. ? The Nebraska athletic department has ended its licensing agreement with the father of quarterback Taylor Martinez.

Casey Martinez of Corona, Calif., owns Corn Fed Apparel Inc. His agreement with the athletic department paid Nebraska a 10-percent royalty on Corn Fed T-shirts, caps and other products bearing the Cornhuskers’ logo.

Athletic director Tom Osborne said in a statement Wednesday that his staff recently learned that Taylor Martinez is registered as owner of the Corn Fed trademark and the CornFed.com website domain name. Osborne said the quarterback has no ownership in the Corn Fed company and that no NCAA rules have been broken.

Casey Martinez said he initiated conversations about breaking the contract.

“I made the decision to end our agreement to prevent any distractions to my son’s time at the University of Nebraska, as well as the football program,” he wrote in an e-mail to The Associated Press.