diff --git a/include/wx/msw/dcmemory.h b/include/wx/msw/dcmemory.h
index f278bc447e..5ba8eb59e8 100644
--- a/include/wx/msw/dcmemory.h
+++ b/include/wx/msw/dcmemory.h
@@ -28,7 +28,7 @@ class WXDLLEXPORT wxMemoryDC: public wxDC
 
   ~wxMemoryDC(void);
   virtual void SelectObject(const wxBitmap& bitmap);
-  virtual void GetSize(int* width, int* height) const;
+  virtual void DoGetSize(int* width, int* height) const;
 };
 
 #endif
diff --git a/src/msw/dcmemory.cpp b/src/msw/dcmemory.cpp
index 573cfa02e0..60bbb50735 100644
--- a/src/msw/dcmemory.cpp
+++ b/src/msw/dcmemory.cpp
@@ -116,7 +116,7 @@ void wxMemoryDC::SelectObject(const wxBitmap& bitmap)
     m_oldBitmap = (WXHBITMAP) bm;
 }
 
-void wxMemoryDC::GetSize(int *width, int *height) const
+void wxMemoryDC::DoGetSize(int *width, int *height) const
 {
   if (!m_selectedBitmap.Ok())
   {