#ifdef EXPERIMENTAL_TPDA
extern int tpda_defer_errno; /* error number set when a remote delivery is deferred with a host error */
extern uschar *tpda_event; /* event classification */
-extern uschar *tpda_data;; /* event data */
+extern uschar *tpda_data; /* event data */
+extern uschar *delivery_event_action; /* expansion for delivery events */
#endif
extern uschar *transport_name; /* Name of transport last started */