A federal judge has dismissed a suit filed by plaintiffs who brought a constitutional challenge against the U.S. Drug Enforcement Agency’s classification of marijuana as a Schedule I drug, finding that they had not exhausted administrative remedies.

“Although plaintiffs couch their claim in constitutional language, they seek the same relief as would be available in an administrative forum—a change in marijuana’s scheduling classification—based on the same factors that guide DEA’s reclassification determination,” said U.S. District Judge Alvin Hellerstein of the Southern District of New York in a ruling issued on Monday.