diff --git a/t/tail-call.scm b/t/tail-call.scm
index 7eb67383..f3d33c3e 100644
--- a/t/tail-call.scm
+++ b/t/tail-call.scm
@@ -11,3 +11,5 @@
   (if (zero? n)
       0
       (apply zero-2 (list (- n 1)))))
+
+(zero-2 100000)