People sometimes assume that if they made a mistake when signing a contract, they can simply cancel it.
Under Malaysian contract law, it is not that simple.
A mistake only affects the validity of a contract in certain situations. The key question is usually what kind of mistake was made, who made it, and whether the mistake concerned something essential to the agreement.
What Is Mistake in Malaysian Contract Law?
Mistake is dealt with under the Contracts Act 1950, particularly sections 21, 22 and 23.
Broadly speaking, Malaysian law distinguishes between:
- a mistake of fact;
- a mistake of law; and
- a unilateral mistake, where only one party is mistaken.
Not every mistake makes a contract void.
When Does a Mistake Make a Contract Void?
Under section 21 of the Contracts Act 1950, an agreement is void where both parties are under a mistake as to a matter of fact essential to the agreement.
This is sometimes called a common or mutual mistake.
For example, imagine both parties enter into a contract for the sale of specific goods, believing those goods still exist. If the goods had already been destroyed without either party knowing, the mistake may concern something so fundamental that the agreement is void.
The important point is that the mistake must relate to a fact that is essential to the agreement, not merely something minor or commercially inconvenient.
Need Help Understanding Your Contractual Rights?
If you need help understanding your contractual rights or interpreting a contract under Malaysian law, feel free to get in touch. You can also explore Contract Law in Malaysia: A Practical Guide to Contracts, Agreements and Legal Rights for practical articles covering everything from contract formation to breach of contract and legal remedies.
What If Only One Party Is Mistaken?
Generally, a contract is not voidable merely because one party made a mistake.
Section 23 of the Contracts Act 1950 provides that a contract is not voidable simply because one party was mistaken as to a matter of fact.
So if you misunderstand the price, fail to read a clause carefully or make a poor commercial assumption, that does not automatically allow you to escape the contract.
There are, however, limited situations where a unilateral mistake may become legally significant, particularly where the other party knew of the mistake or where the mistake goes to something fundamental such as identity or the nature of the transaction.
What About a Mistake of Law?
A mistake about Malaysian law generally does not make a contract void.
Section 22 of the Contracts Act 1950 distinguishes between a mistake of Malaysian law and a mistake concerning foreign law.
As a general principle, parties are expected to know the law applicable to their transaction.
Mistake vs Misrepresentation
Mistake should not be confused with misrepresentation.
Mistake may arise where both parties simply hold an incorrect belief.
Misrepresentation, on the other hand, involves one party making a false representation that induces the other party to enter into the contract.
That distinction matters because the remedies can be different.
Read more: What Is Misrepresentation in Malaysian Contract Law?
Does a Mistake Make a Contract Void or Voidable?
Where section 21 applies, the agreement is generally void.
That means the law treats the agreement as having no enforceable contractual effect.
This is different from fraud, coercion or misrepresentation, which will usually make a contract voidable at the option of the affected party.
A Practical Tip Before Signing
Many so-called “mistake” cases are actually avoidable with proper due diligence.
Before signing an important agreement:
- check the identity of the contracting parties;
- confirm the property or goods being purchased;
- verify key financial and commercial information; and
- clarify any terms you do not understand.
A genuine legal mistake is much narrower than simply discovering later that you misunderstood the deal.
Frequently Asked Questions
1. Can I cancel a contract because I misunderstood it?
Usually not. A personal misunderstanding does not automatically make the contract void.
2. What if both parties were mistaken?
If both parties were mistaken about a fact essential to the agreement, section 21 of the Contracts Act 1950 may render the agreement void.
3. Is signing without reading the contract a mistake?
Generally, signing without reading or understanding the terms is not enough by itself to invalidate the contract.
Final Thoughts
Mistake in Malaysian Contract Law is a relatively narrow doctrine.
The most important question is whether both parties shared a mistake about a fact that was fundamental to the agreement. If so, the agreement may be void. If the mistake was merely one-sided or concerned something minor, the contract will usually remain enforceable.
