diff --git a/README.org b/README.org
index ba8ca8a..47ecdd8 100644
--- a/README.org
+++ b/README.org
@@ -3513,7 +3513,7 @@ environments and non-floating breakable LaTeX environments by means of
 #+name: lst:ox-engraved-emacs-lisp-setup
 #+begin_src emacs-lisp -n :exports code :results none :tangle no
 (with-eval-after-load 'ox-latex
-  (make-variable-buffer-local 'org-export-filter-src-block-functions)
+  (make-local-variable 'org-export-filter-src-block-functions)
   (add-to-list 'org-export-filter-src-block-functions
                'org-latex-engraved-source-block-filter)
   (make-variable-buffer-local 'org-latex-compiler-file-string)