diff --git a/include/wx/dc.h b/include/wx/dc.h
index 4b0b0d8ff0..faee757e84 100644
--- a/include/wx/dc.h
+++ b/include/wx/dc.h
@@ -44,7 +44,7 @@ public:
 
     virtual ~wxDrawObject() { }
 
-    void Draw(const wxDCBase& dc) const { }
+    virtual void Draw(wxDCBase& dc) const { }
 
     virtual void CalcBoundingBox(wxCoord x, wxCoord y)
     {