diff --git a/src/widgets/kernel/qwidget.h b/src/widgets/kernel/qwidget.h
index faf2b31a832..02f328d2956 100644
--- a/src/widgets/kernel/qwidget.h
+++ b/src/widgets/kernel/qwidget.h
@@ -64,7 +64,6 @@ class QLocale;
 class QGraphicsProxyWidget;
 class QGraphicsEffect;
 class QRasterWindowSurface;
-class QUnifiedToolbarSurface;
 class QPixmap;
 #ifndef QT_NO_DEBUG_STREAM
 class QDebug;
diff --git a/src/widgets/kernel/qwidget_p.h b/src/widgets/kernel/qwidget_p.h
index 9bd55d6e2de..991b932ecb8 100644
--- a/src/widgets/kernel/qwidget_p.h
+++ b/src/widgets/kernel/qwidget_p.h
@@ -65,8 +65,6 @@ class QWidgetItemV2;
 
 class QStyle;
 
-class QUnifiedToolbarSurface;
-
 // implemented in qshortcut.cpp
 bool qWidgetShortcutContextMatcher(QObject *object, Qt::ShortcutContext context);
 void qSendWindowChangeToTextureChildrenRecursively(QWidget *widget, QEvent::Type eventType);