diff --git a/include/wx/gtk/filectrl.h b/include/wx/gtk/filectrl.h
index fee2f569d1..516fe62e12 100644
--- a/include/wx/gtk/filectrl.h
+++ b/include/wx/gtk/filectrl.h
@@ -12,6 +12,10 @@
 #ifndef FILECTRL_H
 #define FILECTRL_H
 
+#include "wx/control.h"
+
+extern WXDLLEXPORT_DATA(const wxChar) wxFileSelectorDefaultWildcardStr[];
+
 typedef struct _GtkFileChooser GtkFileChooser;
 
 // [GTK] current problems: