Is a Real Estate Contract void if the buyer's name is incorrect?

We made an offer to buy a residential property but it would only be accepted on the condition that we use our business name. We reluctantly signed. Due to unforeseen cirstances we want to withdraw the offer. We have noticed that the R/E Agent did not write PTY LTD after our business name so it can be mistaken for another business. Is the contract void on a technicality??