Fix one, minor error.
Fix one, minor error.

openeventdata/petrarch2,johnb30/petrarch2,opcoder/zh_ptr,cnnorris/petrarch,openeventdata/petrarch,johnb30/petrarch,JingL1014/petrarch2,pjdufour/petrarch,Sayeedsalam/spec-petrarch2