diff --git a/src/widgets/util/qsystemtrayicon_x11.cpp b/src/widgets/util/qsystemtrayicon_x11.cpp
index 347e5701c0e..21ce23437f2 100644
--- a/src/widgets/util/qsystemtrayicon_x11.cpp
+++ b/src/widgets/util/qsystemtrayicon_x11.cpp
@@ -83,6 +83,7 @@ protected:
     virtual void mouseDoubleClickEvent(QMouseEvent *ev);
     virtual bool event(QEvent *);
     virtual void paintEvent(QPaintEvent *);
+    virtual void resizeEvent(QResizeEvent *);
 
 private slots:
     void systemTrayWindowChanged(QScreen *screen);
@@ -205,6 +206,11 @@ void QSystemTrayIconSys::paintEvent(QPaintEvent *)
     q->icon().paint(&painter, rect);
 }
 
+void QSystemTrayIconSys::resizeEvent(QResizeEvent *)
+{
+    update();
+}
+
 ////////////////////////////////////////////////////////////////////////////
 
 QSystemTrayIconPrivate::QSystemTrayIconPrivate()