diff --git a/browser.html b/browser.html
index 1a23366..f4916c9 100644
--- a/browser.html
+++ b/browser.html
@@ -123,7 +123,7 @@ <h2>Custom Request Headers</h2>
     <h2>Response Headers</h2>
     <pre><%= status.code %> <%= status.text %>
 
-<%= headers %></pre>
+<%= _.escape(headers) %></pre>
   </script>
 
   <script id="response-body-template" type="text/template">