-ADD_ACKNOWLEDGER (Fingering_engraver, rhythmic_head);
-ADD_ACKNOWLEDGER (Fingering_engraver, stem);
+
+void
+Fingering_engraver::boot ()
+{
+ ADD_LISTENER (Fingering_engraver, fingering);
+ ADD_ACKNOWLEDGER (Fingering_engraver, rhythmic_head);
+ ADD_ACKNOWLEDGER (Fingering_engraver, stem);
+ ADD_ACKNOWLEDGER (Fingering_engraver, flag);
+}