diff --git a/gtk2_ardour/pianoroll_midi_view.cc b/gtk2_ardour/pianoroll_midi_view.cc
index c432fce673..ca51b8cbc3 100644
--- a/gtk2_ardour/pianoroll_midi_view.cc
+++ b/gtk2_ardour/pianoroll_midi_view.cc
@@ -119,6 +119,8 @@ PianorollMidiView::~PianorollMidiView ()
 bool
 PianorollMidiView::midi_canvas_group_event (GdkEvent* ev)
 {
+	EC_LOCAL_TEMPO_SCOPE_ARG (_editing_context);
+
 	/* Let MidiView do its thing */
 
 	if (MidiView::midi_canvas_group_event (ev)) {