Minn. Stat. § 336.2A-109: OPTION TO ACCELERATE AT WILL.

A term providing that one party or the party's successor in interest may accelerate payment or performance or require collateral or additional collateral "at will" or "when the party deems self insecure" or in words of similar import must be construed to mean that the party has power to do so only if the party in good faith believes that the prospect of payment or performance is impaired.