diff --git a/gtk2_ardour/midi_cut_buffer.cc b/gtk2_ardour/midi_cut_buffer.cc
index 3232069c20..f14262b3ad 100644
--- a/gtk2_ardour/midi_cut_buffer.cc
+++ b/gtk2_ardour/midi_cut_buffer.cc
@@ -22,7 +22,7 @@
 using namespace ARDOUR;
 
 MidiCutBuffer::MidiCutBuffer (Session* s)
-	: AutomatableSequence<Temporal::Beats> (*s)
+	: AutomatableSequence<Temporal::Beats> (*s, Temporal::BeatTime)
 {
 
 }