diff --git a/src/kitemviews/kitemlistcontroller.cpp b/src/kitemviews/kitemlistcontroller.cpp
index 854a0087aa..1cd06c7e16 100644
--- a/src/kitemviews/kitemlistcontroller.cpp
+++ b/src/kitemviews/kitemlistcontroller.cpp
@@ -538,8 +538,7 @@ bool KItemListController::mousePressEvent(QGraphicsSceneMouseEvent* event, const
     m_pressedIndex = m_view->itemAt(m_pressedMousePos);
     emit mouseButtonPressed(m_pressedIndex, event->buttons());
 
-    // TODO: Qt5: Replace Qt::XButton1 by Qt::BackButton and Qt::XButton2 by Qt::ForwardButton
-    if (event->buttons() & (Qt::XButton1 | Qt::XButton2)) {
+    if (event->buttons() & (Qt::BackButton | Qt::ForwardButton)) {
         // Do not select items when clicking the back/forward buttons, see
         // https://bugs.kde.org/show_bug.cgi?id=327412.
         return true;
diff --git a/src/views/dolphinview.cpp b/src/views/dolphinview.cpp
index e7034984e9..17465eaa95 100644
--- a/src/views/dolphinview.cpp
+++ b/src/views/dolphinview.cpp
@@ -1084,10 +1084,9 @@ void DolphinView::slotMouseButtonPressed(int itemIndex, Qt::MouseButtons buttons
 
     hideToolTip();
 
-    // TODO: Qt5: Replace Qt::XButton1 by Qt::BackButton and Qt::XButton2 by Qt::ForwardButton
-    if (buttons & Qt::XButton1) {
+    if (buttons & Qt::BackButton) {
         emit goBackRequested();
-    } else if (buttons & Qt::XButton2) {
+    } else if (buttons & Qt::ForwardButton) {
         emit goForwardRequested();
     }
 }