diff --git a/lib/middleware/blob/authentication.js b/lib/middleware/blob/authentication.js
index 804a2b9..7a0ef9e 100644
--- a/lib/middleware/blob/authentication.js
+++ b/lib/middleware/blob/authentication.js
@@ -2,7 +2,6 @@
 
 const BbPromise = require('bluebird'),
     crypto = require('crypto'),
-    Querystring = require('querystring'),
     Keys = require('./../../core/Constants').Keys,
     Operations = require('./../../core/Constants').Operations;