diff --git a/content/en/references/coverage/_index.md b/content/en/references/coverage/_index.md
index 41474b22cc..3e4f671c2d 100644
--- a/content/en/references/coverage/_index.md
+++ b/content/en/references/coverage/_index.md
@@ -18,7 +18,7 @@ function searchForServiceNameInLink() {
   var input, filter, div, elements, a, i, txtValue;
   input = document.getElementById('serviceNameCoverageInput');
   filter = input.value.toUpperCase();
-  div = document.getElementsByClassName['section-index'](0)
+  div = document.getElementsByClassName('section-index')(0)
   elements = div.getElementsByClassName('entry');
 
   // Loop through all list items, and hide those who don't match the search query