diff --git a/lib/cartodb/controllers/named_maps_admin.js b/lib/cartodb/controllers/named_maps_admin.js
index 64a01ac4..6e8ca013 100644
--- a/lib/cartodb/controllers/named_maps_admin.js
+++ b/lib/cartodb/controllers/named_maps_admin.js
@@ -189,7 +189,7 @@ function ifUnauthenticated(authenticated, description) {
 }
 
 function ifInvalidContentType(req, description) {
-    if ( ! req.headers['content-type'] || req.headers['content-type'].split(';')[0] != 'application/json' ) {
+    if (!req.is('application/json')) {
         throw new Error(description);
     }
 }