Okla. Stat. tit. 16 § 54
A person who owns real property or an interest in real property for which the title includes a recorded conveyance instrument containing an illegal discriminatory restrictive covenant pursuant to the Fair Housing Act, 42 U.S.C., Section 3601 et seq., or another person with the written and notarized permission of the owner, may declare that the discriminatory restrictive covenant is illegal and unenforceable and should be removed. The declaration shall be filed with the clerk of the county where the property is located.
An illegal discriminatory restrictive covenant is not enforceable in this state, and all discriminatory restrictive covenants contained in any real estate conveyance or instrument recorded in this state are unlawful, are unenforceable, and are declared null and void. Any discriminatory restrictive covenant contained in a previously recorded real estate conveyance or instrument is extinguished and severed from the recorded real estate conveyance or instrument and the remainder of the title transaction remains enforceable and effective.
Okla. Stat. tit. 16, § 54