diff --git a/include/wx/mac/carbon/private.h b/include/wx/mac/carbon/private.h
index d893acc5f2..2b9a27e04d 100644
--- a/include/wx/mac/carbon/private.h
+++ b/include/wx/mac/carbon/private.h
@@ -920,6 +920,11 @@ public:
 
     virtual wxMacDataItem* CreateItem();
 
+    virtual void    ItemNotification(
+                        const wxMacDataItem* itemID,
+                        DataBrowserItemNotification message,
+                        DataBrowserItemDataRef itemData);
+
     // pointing back
 
     wxWindow * GetPeer() const;