Fix for corner case encountered while debugging
Fix for corner case encountered while debugging

tbabej/astropy,larrybradley/astropy,MSeifert04/astropy,aleksandr-bakanov/astropy,DougBurke/astropy,bsipocz/astropy,mhvk/astropy,DougBurke/astropy,saimn/astropy,lpsinger/astropy,kelle/astropy,AustereCuriosity/astropy,funbaker/astropy,pllim/astropy,pllim/astropy,tbabej/astropy,astropy/astropy,bsipocz/astropy,joergdietrich/astropy,stargaser/astropy,dhomeier/astropy,pllim/astropy,bsipocz/astropy,kelle/astropy,bsipocz/astropy,stargaser/astropy,lpsinger/astropy,saimn/astropy,joergdietrich/astropy,larrybradley/astropy,kelle/astropy,StuartLittlefair/astropy,lpsinger/astropy,kelle/astropy,StuartLittlefair/astropy,tbabej/astropy,larrybradley/astropy,astropy/astropy,mhvk/astropy,lpsinger/astropy,tbabej/astropy,saimn/astropy,AustereCuriosity/astropy,astropy/astropy,StuartLittlefair/astropy,aleksandr-bakanov/astropy,pllim/astropy,AustereCuriosity/astropy,funbaker/astropy,mhvk/astropy,mhvk/astropy,dhomeier/astropy,joergdietrich/astropy,DougBurke/astropy,StuartLittlefair/astropy,funbaker/astropy,aleksandr-bakanov/astropy,joergdietrich/astropy,AustereCuriosity/astropy,MSeifert04/astropy,saimn/astropy,joergdietrich/astropy,MSeifert04/astropy,larrybradley/astropy,stargaser/astropy,MSeifert04/astropy,lpsinger/astropy,dhomeier/astropy,StuartLittlefair/astropy,DougBurke/astropy,funbaker/astropy,astropy/astropy,kelle/astropy,aleksandr-bakanov/astropy,dhomeier/astropy,mhvk/astropy,astropy/astropy,pllim/astropy,larrybradley/astropy,dhomeier/astropy,tbabej/astropy,AustereCuriosity/astropy,stargaser/astropy,saimn/astropy