Error when adding Wallet Address

My BTC wallet address for Zergpool is 33 characters, however when I try to save it I get a message that is has to be at least 34 characters.

According to this article, the BTC addresses can be anywhere between 26 and 34 characters with a good portion being 33 characters long. https://en.bitcoin.it/wiki/Address

I've checked and re-checked and the address is correct, or it's the one coinbase made for me.