diff --git a/include/wx/univ/textctrl.h b/include/wx/univ/textctrl.h
index a8a044e177..8c7a4c0280 100644
--- a/include/wx/univ/textctrl.h
+++ b/include/wx/univ/textctrl.h
@@ -519,6 +519,8 @@ private:
 
     DECLARE_EVENT_TABLE()
     DECLARE_DYNAMIC_CLASS(wxTextCtrl)
+
+    friend class wxWrappedLineData;
 };
 
 // ----------------------------------------------------------------------------