add fix for AD issue
add fix for AD issue

socialpercon/anki-1,holycrepe/anki,weihautin/anki,sunclx/anki,Stvad/anki,subfusc/anki,xuewenfei/anki,jakesyl/ruby-card,kenjhim/anki,eduOS/anki,hssm/anki,go38/anki,hssm/anki,ospalh/libanki3,Arthaey/anki,jkitching/anki,florianjacob/anki,LucasCabello/anki,weihautin/anki,abeyer/anki,jakesyl/ruby-card