fixes #4147
fixes #4147

mbaulch/Nim,russpowers/Nim,haiodo/Nim,singularperturbation/Nim,russpowers/Nim,haiodo/Nim,singularperturbation/Nim,singularperturbation/Nim,mbaulch/Nim,zachaysan/Nim,haiodo/Nim,russpowers/Nim,jfhg/Nim,haiodo/Nim,tulayang/Nim,haiodo/Nim,jfhg/Nim,zachaysan/Nim,tulayang/Nim,tulayang/Nim,tulayang/Nim,zachaysan/Nim,jfhg/Nim,dom96/Nim,dom96/Nim,jfhg/Nim,singularperturbation/Nim,russpowers/Nim,mbaulch/Nim,mbaulch/Nim,tulayang/Nim,russpowers/Nim,dom96/Nim,russpowers/Nim,zachaysan/Nim,zachaysan/Nim,jfhg/Nim,russpowers/Nim,tulayang/Nim,mbaulch/Nim,haiodo/Nim,singularperturbation/Nim,dom96/Nim,jfhg/Nim,singularperturbation/Nim,singularperturbation/Nim,zachaysan/Nim,mbaulch/Nim,jfhg/Nim,dom96/Nim,dom96/Nim,dom96/Nim,mbaulch/Nim,haiodo/Nim,zachaysan/Nim