diff --git a/gtk2_ardour/editor_canvas.cc b/gtk2_ardour/editor_canvas.cc
index f91d8fd20e..2b7ae25a78 100644
--- a/gtk2_ardour/editor_canvas.cc
+++ b/gtk2_ardour/editor_canvas.cc
@@ -167,7 +167,7 @@ Editor::initialize_canvas ()
 	tempo_group = new ArdourCanvas::Container (tempo_meta_group, ArdourCanvas::Duple (0.0, 0.0));
 	CANVAS_DEBUG_NAME (tempo_group, "tempo group");
 	mapping_group = new ArdourCanvas::Container (tempo_meta_group, ArdourCanvas::Duple (0.0, 0.0));
-	CANVAS_DEBUG_NAME (tempo_group, "mapping group");
+	CANVAS_DEBUG_NAME (mapping_group, "mapping group");
 	meter_group = new ArdourCanvas::Container (_time_markers_group, ArdourCanvas::Duple (0.0, (timebar_height * 5.0) + 1.0));
 	CANVAS_DEBUG_NAME (meter_group, "meter group");
 
@@ -185,12 +185,11 @@ Editor::initialize_canvas ()
 	tempo_bar->set_outline(false);
 	tempo_bar->set_outline_what(ArdourCanvas::Rectangle::BOTTOM);
 
-	mapping_bar = new ArdourCanvas::Rectangle (tempo_group, ArdourCanvas::Rect (0.0, 0.0, ArdourCanvas::COORD_MAX, timebar_height));
+	mapping_bar = new ArdourCanvas::Rectangle (mapping_group, ArdourCanvas::Rect (0.0, 0.0, ArdourCanvas::COORD_MAX, timebar_height));
 	CANVAS_DEBUG_NAME (mapping_bar, "Mapping Bar");
 	mapping_bar->set_fill(true);
 	mapping_bar->set_outline(false);
 	mapping_bar->set_outline_what(ArdourCanvas::Rectangle::BOTTOM);
-	mapping_bar->hide ();
 
 	range_marker_bar = new ArdourCanvas::Rectangle (range_marker_group, ArdourCanvas::Rect (0.0, timebar_top, ArdourCanvas::COORD_MAX, timebar_btm));
 	CANVAS_DEBUG_NAME (range_marker_bar, "Range Marker Bar");