diff --git a/config.org b/config.org
index 09e5c4e..78f7353 100644
--- a/config.org
+++ b/config.org
@@ -5608,7 +5608,7 @@ DEPTH is an integer specifying the depth of the table.  INFO is
 a plist used as a communication channel.  Optional argument SCOPE
 is an element defining the scope of the table.  Return the table
 of contents as a string, or nil if it is empty."
-  :override org-html-toc
+  :override #'org-html-toc
   (let ((toc-entries
 	 (mapcar (lambda (headline)
 		   (cons (org-html--format-toc-headline headline info)