Okla. Stat. tit. 12A, § 12A-1-309: Option to accelerate at will

Option to Accelerate at Will.

A term providing that one party or that party’s successor in

interest may accelerate payment or performance or require collateral

or additional collateral "at will" or when the party “deems itself

insecure", or in words of similar import, means that the party shall

have power to do so only if that party in good faith believes that

the prospect of payment or performance is impaired. The burden of

establishing lack of good faith is on the party against whom the

power has been exercised.