diff --git a/include/wx/osx/filedlg.h b/include/wx/osx/filedlg.h
index 1d3ccc5504..faf901a6d5 100644
--- a/include/wx/osx/filedlg.h
+++ b/include/wx/osx/filedlg.h
@@ -12,6 +12,8 @@
 #ifndef _WX_FILEDLG_H_
 #define _WX_FILEDLG_H_
 
+class WXDLLIMPEXP_FWD_CORE wxChoice;
+
 //-------------------------------------------------------------------------
 // wxFileDialog
 //-------------------------------------------------------------------------