diff --git a/lib/http_forward.js b/lib/http_forward.js
index d49962e2194b02167a7d04eb74790f7143efeec5..95db6a13a6ef03915821b71d208695782da195f0 100644
--- a/lib/http_forward.js
+++ b/lib/http_forward.js
@@ -39,7 +39,7 @@ module.exports = function(dest, req, res, cb) {
   });
 
   if (req.headers['content-type']) {
-    preq.setHeader('content-type', req.headers['content-type']);
+    preq.setHeader('Content-Type', req.headers['content-type']);
   }
 
   // forward cookies