Ohio Governor John Kasich signed a bill legalizing marijuana on Wednesday, making Ohio the 26th state to legalize the substance for medical uses.

In May, the state’s General Assembly passed the bill allowing doctors to prescribe forms of marijuana to patients. It requires that marijuana be available within two years, from a “seed-to-sale” system within Ohio, the ColumbiaDispatch reports.

Kasich had said he supported the measure, but the Governor’s office said he had to study the details of the bill before deciding whether he would sign it. He did so within a few hours of receiving the legislation.

The bill only allows doctors to assign marijuana for patients with certain conditions, such as cancer, AIDS and epilepsy.