diff --git a/lib/handlers/index.js b/lib/handlers/index.js
index 64739b111..4251346ea 100644
--- a/lib/handlers/index.js
+++ b/lib/handlers/index.js
@@ -23,7 +23,7 @@ function handler (req, res, next) {
       return res.redirect(301, path.join(req.path, '/'))
     }
 
-    if (requestedType.indexOf('text/html') !== 0) {
+    if (requestedType && requestedType.indexOf('text/html') !== 0) {
       return next()
     }
     debug('Looking for index in ' + req.path)