Fixing bug #3900.
Fixing bug #3900.

silene/coq,ejgallego/coq,TOSPIO/coq,william-lawvere/coq,maximedenes/coq,aspiwack/coq,aspiwack/coq,letouzey/coq-wip,maximedenes/coq,william-lawvere/coq,amintimany/coq,Zimmi48/coq,herbelin/github-coq,barras/coq,Zimmi48/coq,gmalecha/coq,TOSPIO/coq,letouzey/coq-wip,8l/coq,Lionel-Rieg/coq,mlasson/coq,maximedenes/coq,gares/coq,maximedenes/coq,SkySkimmer/coq,JasonGross/coq,maximedenes/coq,herbelin/github-coq,JasonGross/coq,barras/coq,barras/coq,amintimany/coq,Matafou/coq,asr/coq,Lionel-Rieg/coq,gares/coq,TheTypoMaster/coq,JasonGross/coq,ppedrot/coq,ale-f/coq,8l/coq,Matafou/coq,ppedrot/coq,Zimmi48/coq,coq/coq,Ptival/coq,Zimmi48/coq,ejgallego/coq,mlasson/coq,letouzey/coq-wip,ppedrot/coq,amintimany/coq,JasonGross/coq,gmalecha/coq,coq/coq,asr/coq,gmalecha/coq,ejgallego/coq,Ptival/coq,Lionel-Rieg/coq,silene/coq,ppedrot/coq,aspiwack/coq,mattam82/coq,william-lawvere/coq,letouzey/coq-wip,mlasson/coq,letouzey/coq-wip,mattam82/coq,8l/coq,TheTypoMaster/coq,SkySkimmer/coq,silene/coq,SkySkimmer/coq,ale-f/coq,ejgallego/coq,SkySkimmer/coq,jpdeplaix/coq,herbelin/github-coq,gares/coq,Ptival/coq,asr/coq,ppedrot/coq,TheTypoMaster/coq,ale-f/coq,coq/coq,jpdeplaix/coq,jpdeplaix/coq,coq/coq,TOSPIO/coq,Matafou/coq,mattam82/coq,gares/coq,gares/coq