diff --git a/single-articles.php b/single-articles.php
index fd44f79..c4e9200 100644
--- a/single-articles.php
+++ b/single-articles.php
@@ -49,7 +49,7 @@
 								}
 								?>
 							</ul>
-							<ul data-index="footnotes" class="footnotes-index" aria-hidden="true">
+							<ul id="footnotes-index" data-index="footnotes" class="footnotes-index" aria-hidden="true">
 								<?php
 								$footnotes = build_footnotes_index_from_content(get_the_content());
 								?>