No mistake about the mistake.

In Richard v. Anadarko Petroleum Corp., the Fifth Circuit required reformation of a contract on the grounds of mutual mistake, to the detriment of non-party Liberty Mutual, acknowledging that “[c]ourts must guard against parties’ ‘attempts to make an end-run around the parol-evidence rule,’ which forecloses the use of parol evidence to interpret unambiguous terms, ‘by framing [their] argument[s] as a request for reformation.” Here, reformation was appropriate even considering the effect on Liberty Mutual, given (1) its lack of reliance on the contract, (2) the general consistency of the terms in the reformed contract with industry practice, and (3) course of performance. No. 16-30216 (March 2, 2017).