Avoid potential NPE
Avoid potential NPE

mix-it/mixit,mix-it/mixit,mixitconf/mixit,mixitconf/mixit,sdeleuze/mixit,sdeleuze/mixit,mixitconf/mixit,mix-it/mixit,mixitconf/mixit,sdeleuze/mixit,sdeleuze/mixit,mix-it/mixit,mix-it/mixit