diff --git a/tests/step4_if_fn_do.mal b/tests/step4_if_fn_do.mal
index ef798056..45654b8f 100644
--- a/tests/step4_if_fn_do.mal
+++ b/tests/step4_if_fn_do.mal
@@ -203,6 +203,8 @@ a
 ;; Testing recursive function in environment.
 (let* [cst (fn* [n] (if (= n 0) nil (cst (- n 1))))] (cst 1))
 ;=>nil
+(let* [f (fn* [n] (if (= n 0) 0 (g (- n 1)))) g (fn* [n] (f n))] (f 2))
+;=>0
 
 
 ;>>> deferrable=True