Quick fix to broken test, so master passes again on PY3.
Quick fix to broken test, so master passes again on PY3.

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