Civil Code · Book IV: Obligations and Contracts · Title II: Contracts
Chapter 2: Essential Requisites of Contracts · Sec. 1: Consent
Current text, as of October 24, 2026
In order that mistake may invalidate consent, it should refer to the substance of the thing which is the object of the contract, or to those conditions which have principally moved one or both parties to enter into the contract.
Mistake as to the identity or qualifications of one of the parties will vitiate consent only when such identity or qualifications have been the principal cause of the contract.
A simple mistake of account shall give rise to its correction. (1266a)
Consolidated by Alleba from the text of Republic Act No. 386 (Lawphil and the Supreme Court E-Library). Book I provisions on marriage, family relations and parental authority were repealed by the Family Code (Executive Order No. 209, 1987) and are shown for reference only. For information and research only, and not legal advice. For certified copies, refer to the Official Gazette or the issuing agency.