Okla. Stat. tit. 60, § 60-77
Reformation of offending instruments
If an instrument violates the rule against perpetuities, but can
be reformed or construed in accordance with the provisions of this
act, is shall not be declared totally invalid. Rather, the
provisions thereof that do not offend the rule shall be enforced,
and only the provisions thereof that do violate, or might violate,
the rule shall be subject to reformation or construction under the
doctrine of cy pres within the terms of this act.