fixed issue #219
fixed issue #219

obfuscurity/carbon,johnseekins/carbon,graphite-project/carbon,pu239ppy/carbon,kharandziuk/carbon,benburry/carbon,lyft/carbon,JeanFred/carbon,xadjmerripen/carbon,krux/carbon,xadjmerripen/carbon,criteo-forks/carbon,cbowman0/carbon,piotr1212/carbon,kharandziuk/carbon,krux/carbon,johnseekins/carbon,graphite-project/carbon,cbowman0/carbon,mleinart/carbon,criteo-forks/carbon,pu239ppy/carbon,deniszh/carbon,pratX/carbon,benburry/carbon,graphite-server/carbon,deniszh/carbon,JeanFred/carbon,lyft/carbon,obfuscurity/carbon,pratX/carbon,iain-buclaw-sociomantic/carbon,graphite-server/carbon,piotr1212/carbon,mleinart/carbon,iain-buclaw-sociomantic/carbon