diff --git a/src/personssortfilterproxymodel.h b/src/personssortfilterproxymodel.h
--- a/src/personssortfilterproxymodel.h
+++ b/src/personssortfilterproxymodel.h
@@ -51,6 +51,8 @@
 
     bool filterAcceptsRow(int source_row, const QModelIndex &source_parent) const override;
 
+    Q_INVOKABLE void sort(int column, Qt::SortOrder order = Qt::AscendingOrder) override;
+
 private:
     Q_DISABLE_COPY(PersonsSortFilterProxyModel)
 
diff --git a/src/personssortfilterproxymodel.cpp b/src/personssortfilterproxymodel.cpp
--- a/src/personssortfilterproxymodel.cpp
+++ b/src/personssortfilterproxymodel.cpp
@@ -76,4 +76,8 @@
     return false;
 }
 
+void PersonsSortFilterProxyModel::sort(int column, Qt::SortOrder order)
+{
+    QSortFilterProxyModel::sort(column, order);
+}
 }