1 files changed, 1 insertions, 0 deletions
diff --git a/archiveview.h b/archiveview.h
index a900ec2..e6f741d 100644
--- a/archiveview.h
+++ b/archiveview.h
@@ -136,6 +136,7 @@ class ArchiveProxy : public QSortFilterProxyModel {
 
     protected:
         bool filterAcceptsRow(int sourceRow, const QModelIndex &sourceParent) const;
+        virtual bool lessThan(const QModelIndex &left, const QModelIndex &right) const;
 
     private:
         QRegExp mFilter;