diff --git a/README.org b/README.org
index e840170..86ab17a 100644
--- a/README.org
+++ b/README.org
@@ -4970,7 +4970,7 @@ post.
 #+caption[Define a =Common Lisp= function to find standard symbol names]:
 #+caption: Define a =Common Lisp= function to find standard symbol names.
 #+name: lst:standard-symbol-names
-#+begin_src lisp :eval never-export :results silent :tangle no
+#+begin_src lisp -n :eval never-export :results silent :tangle no
 (defun standard-symbol-names (predicate)
   (let ((symbols nil))
     (do-external-symbols (symbol :common-lisp)