Text of the provision

Art. 1331. 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)

Civil Code of the Philippines, Republic Act No. 386, approved June 18, 1949, effective August 30, 1950. Reproduced in full; verified verbatim against the LawPhil and ChanRobles official-text renderings.

What this article means

For mistake to invalidate consent, it must go to the substance of the object or to the conditions that principally moved a party to contract. Mistake as to a party's identity or qualifications vitiates only when that was the principal cause; a mere mistake of account is only corrected.

Related provisions

Cases interpreting this article

Note. The text of the provision above is reproduced in full from the official enactment (Republic Act No. 386), verified against the LawPhil and ChanRobles renderings. The annotation and commentary around it are the work of Vivas & Nobles Law Office and are general legal information, not legal advice. How a provision applies to a particular situation depends on facts that only a lawyer reviewing your case can assess.