#include "wx/wxprec.h"
 
 #ifndef WX_PRECOMP
+    #include "wx/app.h"
     #include "wx/button.h"
     #include "wx/brush.h"
     #include "wx/panel.h"
 , const wxPoint&                    rPos
 , const wxSize&                     rSize
 , long                              lStyle
-#if wxUSE_VALIDATORS
 , const wxValidator&                rValidator
-#endif
 , const wxString&                   rsName
 )
 {