diff --git a/Makefile.am b/Makefile.am
index 350f21023..5ad6432cd 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -71,6 +71,7 @@ lmms_MOC =						\
 		./nstate_button.moc			\
 		./midi_alsa_seq.moc			\
 		./midi_tab_widget.moc			\
+		./note_play_handle.moc			\
 		./pattern.moc				\
 		./piano_roll.moc			\
 		./piano_widget.moc			\