Index: links_related.module
===================================================================
--- links_related.module	(revision 50)
+++ links_related.module	(working copy)
@@ -448,6 +448,10 @@
  * with a class of "links_related_endnotes" to make it more themeable.
  */
 function _links_related_format_list($list, $heading='') {
+  return theme('links_related_format_list', $list, $heading);
+}
+
+function theme_links_related_format_list($list, $heading = '') {
   // Trivial rejection
   if (count($list) < 1) {
     return '';