diff --git a/networks.rkt b/networks.rkt
index 95829a3..235121e 100644
--- a/networks.rkt
+++ b/networks.rkt
@@ -1631,4 +1631,5 @@
                  (tbf/state (hash 'b 2) 0)
                  'b
                  (tbf/state (hash 'a 2) 0)))
-    (print-org-sbn sbn)))
+    (check-equal? (print-org-sbn sbn)
+                  '((- a b) (a 0 2) (b 2 0)))))