diff --git a/include/wx/gtk/private.h b/include/wx/gtk/private.h
index 261f483ee9..2bf984ce45 100644
--- a/include/wx/gtk/private.h
+++ b/include/wx/gtk/private.h
@@ -17,6 +17,8 @@
 #include "wx/gtk/private/string.h"
 #include "wx/gtk/private/gtk2-compat.h"
 
+class WXDLLIMPEXP_FWD_CORE wxFont;
+
 // pango_version_check symbol is quite recent ATM (4/2007)... so we
 // use our own wrapper which implements a smart trick.
 // Use this function as you'd use pango_version_check: