Bittrex withdrawl to NEM IOS wallet

I keep getting the following error when I try to transfer some NEM out.

I tried sending 30 NEM. Which equals 15 tx fee and 15 withdrawl?

There was an error processing your withdrawal. Please try again. Error:WITHDRAWAL_TOO_SMALL

It looks like they won’t allow you to withdraw such a small amount. We have no control over what exchanges do when it comes to minimum or maximum withdrawal limits.