diff --git a/src/ExtendedTableWidget.cpp b/src/ExtendedTableWidget.cpp
index 88501e56..f83d6e6b 100644
--- a/src/ExtendedTableWidget.cpp
+++ b/src/ExtendedTableWidget.cpp
@@ -384,11 +384,11 @@ ExtendedTableWidget::ExtendedTableWidget(QWidget* parent) :
     // Add spreadsheet shortcuts for selecting entire columns or entire rows.
     QShortcut* selectColumnShortcut = new QShortcut(QKeySequence("Ctrl+Space"), this);
     connect(selectColumnShortcut, &QShortcut::activated, [this]() {
-        selectionModel()->select(QItemSelection(selectionModel()->selectedIndexes().constFirst(), selectionModel()->selectedIndexes().constLast()), QItemSelectionModel::Select | QItemSelectionModel::Columns);
+        selectionModel()->select(QItemSelection(selectionModel()->selectedIndexes().first(), selectionModel()->selectedIndexes().last()), QItemSelectionModel::Select | QItemSelectionModel::Columns);
     });
     QShortcut* selectRowShortcut = new QShortcut(QKeySequence("Shift+Space"), this);
     connect(selectRowShortcut, &QShortcut::activated, [this]() {
-        selectionModel()->select(QItemSelection(selectionModel()->selectedIndexes().constFirst(), selectionModel()->selectedIndexes().constLast()), QItemSelectionModel::Select | QItemSelectionModel::Rows);
+        selectionModel()->select(QItemSelection(selectionModel()->selectedIndexes().first(), selectionModel()->selectedIndexes().last()), QItemSelectionModel::Select | QItemSelectionModel::Rows);
     });
 
 #if QT_VERSION >= QT_VERSION_CHECK(5, 12, 0) && QT_VERSION < QT_VERSION_CHECK(5, 12, 3)