Fix regression
Fix regression

reported here: https://github.com/resque/resque/pull/1374#issuecomment-172924862

resque/resque,coupa/resque,xiangzhuyuan/resque,resque/resque,CloudVLab/resque,Shopify/resque,CloudVLab/resque,coupa/resque,xiangzhuyuan/resque,resque/resque,xiangzhuyuan/resque,Shopify/resque,CloudVLab/resque,coupa/resque,Shopify/resque