diff --git a/include/wx/msw/dialog.h b/include/wx/msw/dialog.h
index b502600039..f883cd4ea8 100644
--- a/include/wx/msw/dialog.h
+++ b/include/wx/msw/dialog.h
@@ -62,13 +62,8 @@ public:
   ~wxDialog(void);
 
   virtual bool Destroy(void);
-  void SetSize(int x, int y, int width, int height, int sizeFlags = wxSIZE_AUTO);
-  void SetSize(const wxRect& rect, int sizeFlags = wxSIZE_AUTO)
-    { wxWindow::SetSize(rect, sizeFlags); }
-  void SetSize(const wxSize& size) { wxWindow::SetSize(size); }
 
   void SetClientSize(int width, int height);
-  void SetClientSize(const wxSize& sz) { wxWindow::SetClientSize(sz); }
 
   void GetPosition(int *x, int *y) const;
   wxPoint GetPosition() const { return wxWindow::GetPosition(); }