Appveyor: try to fix build
Appveyor: try to fix build

DarthGandalf/znc,Zarthus/znc,DarthGandalf/znc,Zarthus/znc,DarthGandalf/znc,Zarthus/znc,DarthGandalf/znc,znc/znc,Zarthus/znc,DarthGandalf/znc,Zarthus/znc,znc/znc,znc/znc,znc/znc,Zarthus/znc,znc/znc,DarthGandalf/znc,znc/znc