diff --git a/lib/quip.js b/lib/quip.js
index c619465..d8d43a9 100644
--- a/lib/quip.js
+++ b/lib/quip.js
@@ -93,6 +93,7 @@ exports.update = function(res,viewTypes){
     res.rss = withType('application/rss+xml');
     res.javascript = withType('text/javascript');
     res.json = withType('application/json');
+    res.png = withType('image/png');
 
     // JSONP is a special case that should always respond with a 200,
     // there is no reliable way to reveive a JSONP result on the