diff --git a/test/ol.html b/test/ol.html
index 094b5ebbff..7831aa0962 100644
--- a/test/ol.html
+++ b/test/ol.html
@@ -22,6 +22,7 @@
   <div id="mocha"></div>
 
   <script type="text/javascript" src="jquery-1.9.1/jquery.min.js"></script>
+  <!-- Extended expect.js w/ various methods, see #374 for the differences to 0.2.0 -->
   <script type="text/javascript" src="expect-0.2.0-ol3/expect.js"></script>
   <script type="text/javascript" src="sinon-1.6.0/sinon.js"></script>
   <script type="text/javascript" src="mocha-1.8.1/mocha.js"></script>