diff --git a/gtk2_ardour/midi_region_view.cc b/gtk2_ardour/midi_region_view.cc
index ffc9fcac75..0b0140ab8a 100644
--- a/gtk2_ardour/midi_region_view.cc
+++ b/gtk2_ardour/midi_region_view.cc
@@ -120,6 +120,9 @@ MidiRegionView::MidiRegionView (ArdourCanvas::Group *parent, RouteTimeAxisView &
 	, _diff_command(0)
 	, _ghost_note(0)
         , _drag_rect (0)
+        , _step_edit_cursor (0)
+        , _step_edit_cursor_width (1.0)
+        , _step_edit_cursor_position (0.0)
 	, _mouse_state(None)
 	, _pressed_button(0)
 	, _sort_needed (true)
@@ -145,6 +148,9 @@ MidiRegionView::MidiRegionView (const MidiRegionView& other)
 	, _diff_command(0)
 	, _ghost_note(0)
         , _drag_rect (0)
+        , _step_edit_cursor (0)
+        , _step_edit_cursor_width (1.0)
+        , _step_edit_cursor_position (0.0)
 	, _mouse_state(None)
 	, _pressed_button(0)
 	, _sort_needed (true)
@@ -172,6 +178,9 @@ MidiRegionView::MidiRegionView (const MidiRegionView& other, boost::shared_ptr<M
 	, _diff_command(0)
 	, _ghost_note(0)
         , _drag_rect (0)
+        , _step_edit_cursor (0)
+        , _step_edit_cursor_width (1.0)
+        , _step_edit_cursor_position (0.0)
 	, _mouse_state(None)
 	, _pressed_button(0)
 	, _sort_needed (true)