<prompt> Human: Hi all, we recently signed a lease on a home rental. After several revisions due to assistants error, we finally signed the lease. A few weeks have passed since then, but we recently received an email asking us to sign yet another revision as the assistant miscalculated a pro-rated amount. Do we have to agree since the lease has already been signed? What kind of argument do we have in this case?  <response>: The contract might be voidable if it was a simple math error. I would look at their argument about why the pro-ration is wrong. If you agree that mathematically the pro-ration should have been calculated differently, Id go ahead and sign the new contract. Anyway, really more of a legal question so try rlegaladvice and include the state. 