diff --git a/lib/common/finishGrantingToken.js b/lib/common/finishGrantingToken.js
index fac452c..1ed7612 100644
--- a/lib/common/finishGrantingToken.js
+++ b/lib/common/finishGrantingToken.js
@@ -39,7 +39,9 @@ module.exports = function finishGrantingToken(allCredentials, token, options, re
             responseBody.scope = scopesGranted.join(" ");
         }
 
-        res.send(responseBody);
+        res.send(200, responseBody, {
+            'content-type': 'application/json'
+        });
         next();
     });
 };