diff --git a/gtk2_ardour/midi_time_axis.cc b/gtk2_ardour/midi_time_axis.cc
index 1c359b171e..319c49a562 100644
--- a/gtk2_ardour/midi_time_axis.cc
+++ b/gtk2_ardour/midi_time_axis.cc
@@ -628,8 +628,10 @@ MidiTimeAxisView::set_layer_display (LayerDisplay d)
 	uint32_t h = current_height ();
 	update_scroomer_visbility (h, curr_layer_display);
 
-	/* If visibility changed, trigger a call to Editor::reset_controls_layout_width() */
-	_stripable->gui_changed ("track_height", (void *) 0);
+	/* If visibility changed, trigger a call to Editor::reset_controls_layout_width()
+	 * by forcing a redraw via Editor::queue_redisplay_track_views ()
+	 */
+	_stripable->gui_changed ("visible_tracks", (void *) 0); /* EMIT SIGNAL */
 }
 
 void
diff --git a/gtk2_ardour/stripable_time_axis.cc b/gtk2_ardour/stripable_time_axis.cc
index 3a0df1ae3a..a507e2b85c 100644
--- a/gtk2_ardour/stripable_time_axis.cc
+++ b/gtk2_ardour/stripable_time_axis.cc
@@ -211,7 +211,7 @@ void
 StripableTimeAxisView::request_redraw ()
 {
 	if (_stripable) {
-		_stripable->gui_changed ("track_height", (void *) 0); /* EMIT_SIGNAL */
+		_stripable->gui_changed ("visible_tracks", (void *) 0); /* EMIT_SIGNAL */
 	}
 }