diff --git a/include/wx/image.h b/include/wx/image.h
index e4d78863ab..cc07d24d24 100644
--- a/include/wx/image.h
+++ b/include/wx/image.h
@@ -356,14 +356,14 @@ public:
 
   static void CleanUpHandlers();
   static void InitStandardHandlers();
- 
+
 protected:
 
   static wxList sm_handlers;
 
 };
 
-extern void wxInitAllImageHandlers();
+extern void WXDLLEXPORT wxInitAllImageHandlers();
 
 #endif
   // _WX_IMAGE_H_