diff --git a/include/wx/osx/core/private.h b/include/wx/osx/core/private.h
index 462e0e882f..4453c638f7 100644
--- a/include/wx/osx/core/private.h
+++ b/include/wx/osx/core/private.h
@@ -495,6 +495,8 @@ public:
 // interface to be implemented by a textcontrol
 //
 
+class WXDLLIMPEXP_FWD_CORE wxTextAttr;
+
 // common interface for all implementations
 class WXDLLIMPEXP_CORE wxTextWidgetImpl