diff --git a/include/wx/msw/mdi.h b/include/wx/msw/mdi.h
index eb85ec402c..caf235fd56 100644
--- a/include/wx/msw/mdi.h
+++ b/include/wx/msw/mdi.h
@@ -24,7 +24,7 @@ class WXDLLIMPEXP_FWD_CORE wxAcceleratorTable;
 class WXDLLIMPEXP_CORE wxMDIParentFrame : public wxMDIParentFrameBase
 {
 public:
-    wxMDIParentFrame() { }
+    wxMDIParentFrame() { Init(); }
     wxMDIParentFrame(wxWindow *parent,
                      wxWindowID id,
                      const wxString& title,
@@ -33,6 +33,8 @@ public:
                      long style = wxDEFAULT_FRAME_STYLE | wxVSCROLL | wxHSCROLL,
                      const wxString& name = wxFrameNameStr)
     {
+        Init();
+
         Create(parent, id, title, pos, size, style, name);
     }
 
@@ -121,6 +123,9 @@ protected:
     void UpdateClientSize();
 
 private:
+    // common part of all ctors
+    void Init();
+
 #if wxUSE_MENUS
     // "Window" menu commands event handlers
     void OnMDICommand(wxCommandEvent& event);
diff --git a/src/msw/mdi.cpp b/src/msw/mdi.cpp
index 104ea7a9d8..ad76a20f54 100644
--- a/src/msw/mdi.cpp
+++ b/src/msw/mdi.cpp
@@ -138,6 +138,14 @@ END_EVENT_TABLE()
 // the children
 // ===========================================================================
 
+void wxMDIParentFrame::Init()
+{
+#if wxUSE_MENUS && wxUSE_ACCEL
+  // the default menu doesn't have any accelerators (even if we have it)
+  m_accelWindowMenu = NULL;
+#endif // wxUSE_MENUS && wxUSE_ACCEL
+}
+
 bool wxMDIParentFrame::Create(wxWindow *parent,
                               wxWindowID id,
                               const wxString& title,
@@ -162,11 +170,6 @@ bool wxMDIParentFrame::Create(wxWindow *parent,
       m_windowMenu->Append(wxID_MDI_WINDOW_PREV, _("&Previous"));
   }
 
-#if wxUSE_MENUS && wxUSE_ACCEL
-  // the default menu doesn't have any accelerators (even if we have it)
-  m_accelWindowMenu = NULL;
-#endif // wxUSE_MENUS && wxUSE_ACCEL
-
   if (!parent)
     wxTopLevelWindows.Append(this);