A contract may be voidable even if the person making the misrepresentation believes in good faith that what he/she says is true.

Voidable

A contract or transaction that is voidable can be legally nullified or cancelled by one of the parties involved, often due to reasons like misrepresentation or lack of capacity.

Misrepresentation

A false statement of fact made by one party to another, which has the effect of inducing that other party into a contract.