diff --git a/README.org b/README.org
index 8029b26..b3e5c1f 100644
--- a/README.org
+++ b/README.org
@@ -2591,12 +2591,14 @@ Listing [[lst:configure-format-all]]:
     (when (fboundp 'format-all-ensure-formatter)
       (add-hook 'prog-mode-hook #'format-all-ensure-formatter))
 
-    (add-hook 'org-babel-post-tangle-hook
-              (defun format-all-org-babel-post-tangle ()
-                (when (derived-mode-p 'python-mode)
-                  (setq-local format-all-formatters '(("Python" black)))
-                  (message "Format whole `%s' buffer after tangling" major-mode)
-                  (format-all-buffer)))))
+    (add-hook
+     'org-babel-post-tangle-hook
+     (defun format-all-org-babel-post-tangle ()
+       (when (derived-mode-p 'python-mode)
+         (setq-local format-all-formatters '(("Python" black)))
+         (format-all-buffer)
+         (save-buffer)
+         (message "Saved reformatted tangled buffer `%s'" (buffer-file-name))))))
 #+end_src
 
 ** [[https://dept-info.labri.fr/~strandh/Teaching/PFS/Common/Strandh-Tutorial/Dir-symbolic.html][Common Lisp programming]]