A federal judge has ruled that the Texas prison system has violated the rights of Muslim prisoners by making it impossible to practice their religion.

U.S. District Court Judge Kenneth Hoyt ruled Thursday that there are not enough Muslims in Texas, especially in rural areas, to meet the prison system’s criteria for Muslim inmates to hold services and conduct related activities.

By contrast, the judge ruled, the Texas Department of Criminal Justice, illegally favors Christian inmates because there are ample civilians and chaplains of that faith in the state to conduct services in prison.

The ruling is the latest in a clash that goes back 45 years when a federal judge’s ruling resulting in the state having to accommodate an array of religious needs, including serving pork free meals and permitting inmates to have Islamic literature.