This article discusses the enforcement of international mediated settlement agreements (iMSAs) under the Singapore Mediation Convention 2019. It focuses in particular on the importance of properly considered choice of law agreements by parties in their iMSAs and the consequences where such a choice is absent. The authors stress the importance and relevance of choice of law where grounds of challenge to enforcement of an iMSA under art 5 of the Convention are based upon contractual issues.