diff --git a/README.org b/README.org
index 0cff2fa..a32c31a 100644
--- a/README.org
+++ b/README.org
@@ -1615,9 +1615,13 @@ LaTeX, Org, and Python.
 :CUSTOM_ID: sec:electric-operators
 :END:
 
+Listing [[lst:configure-electric-operator-mode]] configures =electric-operator-mode=
+to add spaces around operators for compatible with for instance the [[https://black.readthedocs.io/en/stable/][Black code
+formatter for Python]].
+
 #+caption[Configure =electric-operator-mode=]:
 #+caption: Configure =electric-operator-mode=.
-#+label: lst:configure-electric-operator-mode
+#+name: lst:configure-electric-operator-mode
 #+begin_src emacs-lisp
   (when (fboundp 'electric-operator-mode)
     (add-hook 'c-mode-common #'electric-operator-mode)