diff --git a/include/wx/access.h b/include/wx/access.h
index b78642463e..978987ed9d 100644
--- a/include/wx/access.h
+++ b/include/wx/access.h
@@ -225,6 +225,9 @@ typedef enum
 // ----------------------------------------------------------------------------
 
 class WXDLLEXPORT wxAccessible;
+class WXDLLEXPORT wxWindow;
+class WXDLLEXPORT wxPoint;
+class WXDLLEXPORT wxRect;
 class WXDLLEXPORT wxAccessibleBase : public wxObject
 {
     DECLARE_NO_COPY_CLASS(wxAccessibleBase)
diff --git a/src/msw/window.cpp b/src/msw/window.cpp
index e9772cc34a..83a50202fa 100644
--- a/src/msw/window.cpp
+++ b/src/msw/window.cpp
@@ -60,6 +60,7 @@
 
 #if wxUSE_ACCESSIBILITY
     #include "wx/access.h"
+    #include <ole2.h>
     #include <oleacc.h>
     #ifndef WM_GETOBJECT
         #define WM_GETOBJECT 0x003D