diff --git a/turnstile/examples/tests/rackunit-typechecking.rkt b/turnstile/examples/tests/rackunit-typechecking.rkt
index 86c70c2..0baac72 100644
--- a/turnstile/examples/tests/rackunit-typechecking.rkt
+++ b/turnstile/examples/tests/rackunit-typechecking.rkt
@@ -6,12 +6,12 @@
 
 (begin-for-syntax
   (define (add-esc s) (string-append "\\" s))
-  (define escs (map add-esc '("(" ")" "[" "]")))
+  (define escs (map add-esc '("(" ")" "[" "]" "+" "*")))
   (define (replace-brackets str)
     (regexp-replace* "\\]" (regexp-replace* "\\[" str "(") ")"))
   (define (add-escs str)
     (replace-brackets
-        (foldl (lambda (c s) (regexp-replace* c s (add-esc c))) str escs)))
+     (foldl (lambda (c s) (regexp-replace* c s (add-esc c))) str escs)))
   (define (expected tys #:given [givens ""] #:note [note ""])
     (string-append  
      note ".*Expected.+argument\\(s\\) with type\\(s\\).+"