diff --git a/include/wx/headerctrl.h b/include/wx/headerctrl.h
index 0e998b79fb..82d6507271 100644
--- a/include/wx/headerctrl.h
+++ b/include/wx/headerctrl.h
@@ -151,7 +151,7 @@ private:
 //               control, see wxHeaderCtrlSimple for a standalone version
 // ----------------------------------------------------------------------------
 
-#if 0// defined(__WXMSW__) && !defined(__WXUNIVERSAL__)
+#if defined(__WXMSW__) && !defined(__WXUNIVERSAL__)
     #include "wx/msw/headerctrl.h"
 #else
     #define wxHAS_GENERIC_HEADERCTRL