diff --git a/README.org b/README.org
index 3a763ac..de35f4f 100644
--- a/README.org
+++ b/README.org
@@ -740,7 +740,10 @@ Note: how to make it work without tangling?
     (require 'oc-csl))
 #+end_src
 
-*** [[https://tecosaur.github.io/emacs-config/#translate-capital-keywords][Translate capital keywords (old) to lower case (new)]]
+*** [[https://tecosaur.github.io/emacs-config/#translate-capital-keywords][Convert keywords to lower case]]
+:PROPERTIES:
+:CUSTOM_ID: sec:convert-keywords-to-lower-case
+:END:
 
 #+attr_latex: :options bgcolor=LightGoldenrodYellow
 #+begin_src emacs-lisp
@@ -759,7 +762,10 @@ Note: how to make it work without tangling?
           (message "Replaced %d keywords" count)))))
 #+end_src
 
-*** [[info:org#Advanced Export Configuration][Advanced Export Configuration (info)]]
+*** [[info:org#Advanced Export Configuration][Advanced export configuration (info)]]
+:PROPERTIES:
+:CUSTOM_ID: sec:advanced-export-configuration
+:END:
 
 Stolen from [[https://git.sr.ht/~bzg/org-contrib/tree/master/item/lisp/ox-extra.el][ox-extra.el]]