diff --git a/src/widgets/kernel/qapplication_p.h b/src/widgets/kernel/qapplication_p.h
index 555436f4f4a..21b1605dfc2 100644
--- a/src/widgets/kernel/qapplication_p.h
+++ b/src/widgets/kernel/qapplication_p.h
@@ -146,7 +146,6 @@ public:
     static QWidget *focus_widget;
     static QWidget *hidden_focus_widget;
 #if QT_CONFIG(wheelevent)
-    static int  wheel_scroll_lines;
     static QPointer<QWidget> wheel_widget;
 #endif