diff --git a/include/wx/gtk/listbox.h b/include/wx/gtk/listbox.h
index ed32f28246..92b6f1b8c6 100644
--- a/include/wx/gtk/listbox.h
+++ b/include/wx/gtk/listbox.h
@@ -75,6 +75,8 @@ public:
 
     virtual void EnsureVisible(int n);
 
+    virtual void Update();
+
     static wxVisualAttributes
     GetClassDefaultAttributes(wxWindowVariant variant = wxWINDOW_VARIANT_NORMAL);
 
diff --git a/src/gtk/listbox.cpp b/src/gtk/listbox.cpp
index 5f504233bd..9f07a408c2 100644
--- a/src/gtk/listbox.cpp
+++ b/src/gtk/listbox.cpp
@@ -504,6 +504,15 @@ void wxListBox::GtkEnableEvents()
     UpdateOldSelections();
 }
 
+
+void wxListBox::Update()
+{
+    wxWindow::Update();
+    
+    if (m_treeview)
+        gdk_window_process_updates(m_wxwindow->window, TRUE);
+}
+
 // ----------------------------------------------------------------------------
 // adding items
 // ----------------------------------------------------------------------------