Partial fix for appveyor
Partial fix for appveyor

LarsAeschlimann/SuperTeacher,LarsAeschlimann/SuperTeacher,NicoHaui/SuperTeacher,NicoHaui/SuperTeacher,BFH-E1D-2015-2016/SuperTeacher,NicoHaui/SuperTeacher,BFH-E1D-2015-2016/SuperTeacher