diff --git a/gtk2_ardour/canvas-simplerect.c b/gtk2_ardour/canvas-simplerect.c
index 1a11569602..028753ee20 100644
--- a/gtk2_ardour/canvas-simplerect.c
+++ b/gtk2_ardour/canvas-simplerect.c
@@ -323,7 +323,7 @@ gnome_canvas_simplerect_reset_bounds (GnomeCanvasItem *item)
 			double start_x = MIN (item->x2, old_x2);
 			double end_x = MAX (item->x2, old_x2);
 
-			gnome_canvas_request_redraw (item->canvas, start_x - 0.5, item->y1, end_x + 1.5, item->y2);
+			gnome_canvas_request_redraw (item->canvas, start_x - 0.5, item->y1, end_x + 1.5, item->y2 + 0.5);
 			return;
 
 		} else if (item->x2 == old_x2) {