diff --git a/gtk2_ardour/midi_view.h b/gtk2_ardour/midi_view.h
index a97a7cb526..98b3fde675 100644
--- a/gtk2_ardour/midi_view.h
+++ b/gtk2_ardour/midi_view.h
@@ -36,7 +36,6 @@
 #include "pbd/signals.h"
 
 #include "ardour/midi_model.h"
-#include "ardour/slice.h"
 #include "ardour/types.h"
 
 #include "editing.h"