diff --git a/scripts/plot b/scripts/plot
index c160fdf..b320d95 100755
--- a/scripts/plot
+++ b/scripts/plot
@@ -78,7 +78,8 @@
 (define (set-pts! mid time pts)
   (hash-update! point-tls mid
                 (lambda (m-tl)
-                  (vector-append m-tl (vector (vector time pts))))))
+                  (vector-append m-tl (vector (vector time (get-last-pts m-tl))
+                                              (vector time pts))))))
 
 (for ([time (in-list timestamps)])
   (for ([solve (in-list (hash-ref timeline time))])