diff --git a/src/sql/models/qsqltablemodel.cpp b/src/sql/models/qsqltablemodel.cpp
index 35346c0f835..29f29bac0d0 100644
--- a/src/sql/models/qsqltablemodel.cpp
+++ b/src/sql/models/qsqltablemodel.cpp
@@ -179,7 +179,7 @@ bool QSqlTableModelPrivate::exec(const QString &stmt, bool prepStatement,
     return true;
 }
 
-QSqlRecord QSqlTableModelPrivate::primaryValues(int row)
+QSqlRecord QSqlTableModelPrivate::primaryValues(int row) const
 {
     QSqlRecord record;
     if (!query.seek(row)) {
diff --git a/src/sql/models/qsqltablemodel_p.h b/src/sql/models/qsqltablemodel_p.h
index dbf2e275b89..8649a91e53b 100644
--- a/src/sql/models/qsqltablemodel_p.h
+++ b/src/sql/models/qsqltablemodel_p.h
@@ -70,7 +70,7 @@ public:
           busyInsertingRows(false)
     {}
     void clear();
-    QSqlRecord primaryValues(int index);
+    QSqlRecord primaryValues(int index) const;
     virtual void clearCache();
     QSqlRecord record(const QVector<QVariant> &values) const;