Ohio Rev. Code § 2107.36
An act of a testator that alters but does not wholly divest the testator's interest in property previously devised or bequeathed by the testator does not revoke the devise or bequest of the property. The devise or bequest shall pass to the devisee or legatee the actual interest of the testator that would otherwise descend to the testator's heirs or pass to the testator's next of kin, unless the instrument by which the alteration is made declares the testator's intention that it shall operate as a revocation of the previous devise or bequest.
If the instrument by which the alteration is made is wholly inconsistent with the previous devise or bequest, the instrument shall operate as a revocation of the devise or bequest, unless the instrument depends on a condition or contingency, and the condition is not performed or the contingency does not happen.
R.C. § 2107.36