diff --git a/README.org b/README.org
index 50305e8..9de360c 100644
--- a/README.org
+++ b/README.org
@@ -3161,9 +3161,10 @@ environments and non-floating breakable LaTeX environments by means of
     (smart-latex-engrave-org-source-blocks)))
 #+end_src
 
-*** [[https://oer.gitlab.io/org-re-reveal/Readme.html][Org-re-reveal]]
+*** [[https://oer.gitlab.io/org-re-reveal/Readme.html][Org-re-reveal]]                                                  :noexport:
 :PROPERTIES:
 :CUSTOM_ID: sec:org-re-reveal
+:header-args:emacs-lisp: :tangle no
 :END:
 
 I have used the [[https://revealjs.com/installation/#full-setup][recommended full setup method]] to install ~reveal.js~ as an
@@ -3184,9 +3185,10 @@ expanded file name of the ~reveal.js~ directory.
     (require 'org-re-reveal)))
 #+end_src
 
-*** [[https://github.com/flexibeast/org-vcard#org-vcard---org-mode-support-for-vcard-export-and-import][Org-mode support for vCard import and export]]
+*** [[https://github.com/flexibeast/org-vcard#org-vcard---org-mode-support-for-vcard-export-and-import][Org-mode support for vCard import and export]]                   :noexport:
 :PROPERTIES:
 :CUSTOM_ID: sec:org-vcard
+:header-args:emacs-lisp: :tangle no
 :END:
 
 Import/export =vcf= files (Android phones) from/to Org-mode linear (level 1)