diff --git a/README.org b/README.org
index 372a33e..10931db 100644
--- a/README.org
+++ b/README.org
@@ -4096,7 +4096,7 @@ Listing [[lst:sbcl-core-for-sly]] tangles to a script to dump such a [[http://ww
 #+caption[Configure =slime=]:
 #+caption: Configure =slime=.
 #+name: lst:configure-slime
-#+begin_src emacs-lisp -n :results silent
+#+begin_src emacs-lisp -n :results silent :tangle no
 (when (ensure-package-installation 'slime)
   (with-eval-after-load 'slime
     (setq slime-default-lisp 'sbcl