diff --git a/include/wx/textcompleter.h b/include/wx/textcompleter.h
index cb21e913db..44f677f719 100644
--- a/include/wx/textcompleter.h
+++ b/include/wx/textcompleter.h
@@ -10,6 +10,9 @@
 #ifndef _WX_TEXTCOMPLETER_H_
 #define _WX_TEXTCOMPLETER_H_
 
+#include "wx/defs.h"
+#include "wx/arrstr.h"
+
 // ----------------------------------------------------------------------------
 // wxTextCompleter: used by wxTextEnter::AutoComplete()
 // ----------------------------------------------------------------------------