1 files changed, 2 insertions, 2 deletions
diff --git a/src/sql/models/qsqltablemodel.h b/src/sql/models/qsqltablemodel.h
index eba27e60ec..1ac8bd9b04 100644
--- a/src/sql/models/qsqltablemodel.h
+++ b/src/sql/models/qsqltablemodel.h
@@ -62,7 +62,7 @@ class Q_SQL_EXPORT QSqlTableModel: public QSqlQueryModel
 public:
     enum EditStrategy {OnFieldChange, OnRowChange, OnManualSubmit};
 
-    explicit QSqlTableModel(QObject *parent = nullptr, QSqlDatabase db = QSqlDatabase());
+    explicit QSqlTableModel(QObject *parent = nullptr, const QSqlDatabase &db = QSqlDatabase());
     virtual ~QSqlTableModel();
 
     virtual void setTable(const QString &tableName);
@@ -127,7 +127,7 @@ Q_SIGNALS:
     void beforeDelete(int row);
 
 protected:
-    QSqlTableModel(QSqlTableModelPrivate &dd, QObject *parent = nullptr, QSqlDatabase db = QSqlDatabase());
+    QSqlTableModel(QSqlTableModelPrivate &dd, QObject *parent = nullptr, const QSqlDatabase &db = QSqlDatabase());
 
     virtual bool updateRowInTable(int row, const QSqlRecord &values);
     virtual bool insertRowIntoTable(const QSqlRecord &values);