diff --git a/notebook/templates/lab.html b/notebook/templates/lab.html
index a88f55e0c..f7dee6c51 100644
--- a/notebook/templates/lab.html
+++ b/notebook/templates/lab.html
@@ -82,7 +82,7 @@
     {% endblock %}
 
     {% if mathjax_url %}
-    <script type="text/javascript" src="{{mathjax_url}}?config=TeX-AMS_HTML-full,Safe&delayStartupUntil=configured" charset="utf-8"></script>
+    <script type="text/javascript" src="{{mathjax_url}}"?config=TeX-AMS_CHTML-full,Safe&amp;delayStartupUntil=configured"" charset="utf-8"></script>
     {% endif %}
 
 </head>