1 files changed, 6 insertions, 1 deletions
diff --git a/src/corelib/itemmodels/qconcatenatetablesproxymodel.cpp b/src/corelib/itemmodels/qconcatenatetablesproxymodel.cpp
index 1c2d5e9f9e..efddc14603 100644
--- a/src/corelib/itemmodels/qconcatenatetablesproxymodel.cpp
+++ b/src/corelib/itemmodels/qconcatenatetablesproxymodel.cpp
@@ -622,9 +622,14 @@ void QConcatenateTablesProxyModelPrivate::_q_slotDataChanged(const QModelIndex &
     Q_Q(QConcatenateTablesProxyModel);
     Q_ASSERT(from.isValid());
     Q_ASSERT(to.isValid());
+    if (from.column() >= m_columnCount)
+        return;
+    QModelIndex adjustedTo = to;
+    if (to.column() >= m_columnCount)
+        adjustedTo = to.siblingAtColumn(m_columnCount - 1);
     const QModelIndex myFrom = q->mapFromSource(from);
     Q_ASSERT(q->checkIndex(myFrom, QAbstractItemModel::CheckIndexOption::IndexIsValid));
-    const QModelIndex myTo = q->mapFromSource(to);
+    const QModelIndex myTo = q->mapFromSource(adjustedTo);
     Q_ASSERT(q->checkIndex(myTo, QAbstractItemModel::CheckIndexOption::IndexIsValid));
     emit q->dataChanged(myFrom, myTo, roles);
 }