diff --git a/test/index.html b/test/index.html
index b64c2f2f2..f4aabfd54 100644
--- a/test/index.html
+++ b/test/index.html
@@ -30,6 +30,7 @@
     <script src='../js/lib/d3.trigger.js'></script>
     <script src='../js/lib/d3.keybinding.js'></script>
     <script src='../js/lib/d3.clip.js'></script>
+    <script src='../js/lib/d3.one.js'></script>
     <script src='../js/lib/d3-compat.js'></script>
     <script src='../js/lib/bootstrap-tooltip.js'></script>
     <script src='../js/lib/rtree.js'></script>