diff --git a/src/sql/models/qsqlrelationaldelegate.h b/src/sql/models/qsqlrelationaldelegate.h
index 439dde2662..52a19dbb0a 100644
--- a/src/sql/models/qsqlrelationaldelegate.h
+++ b/src/sql/models/qsqlrelationaldelegate.h
@@ -82,17 +82,6 @@ QWidget *createEditor(QWidget *aParent,
     return combo;
 }
 
-void setEditorData(QWidget *editor, const QModelIndex &index) const
-{
-    const QSqlRelationalTableModel *sqlModel = qobject_cast<const QSqlRelationalTableModel *>(index.model());
-    QComboBox *combo = qobject_cast<QComboBox *>(editor);
-    if (!sqlModel || !combo) {
-        QItemDelegate::setEditorData(editor, index);
-        return;
-    }
-    combo->setCurrentIndex(combo->findText(sqlModel->data(index).toString()));
-}
-
 void setModelData(QWidget *editor, QAbstractItemModel *model, const QModelIndex &index) const
 {
     if (!index.isValid())