diff --git a/lib/api-request.js b/lib/api-request.js
index 13b4803..bd53c7e 100644
--- a/lib/api-request.js
+++ b/lib/api-request.js
@@ -6,6 +6,7 @@ const http = require('http')
 const https = require('https')
 const fs = require('fs')
 const HttpsProxyAgent = require('https-proxy-agent')
+const querystring = require('querystring')
 
 class Requestor {
   constructor(requestorOptions) {
@@ -22,8 +23,13 @@ class Requestor {
   }
 
   makeRequest(requestArgs, callback) {
+    const acs_action = (requestArgs.optional)
+      ? querystring.encode(Object.assign({
+        version: '1',
+        action: requestArgs.action
+      }, requestArgs.optional)) 
+      : `version=1&action=${requestArgs.action}`
 
-    const acs_action = `version=1&action=${requestArgs.action}`
     const netstoragePath = this.validatePath(requestArgs.path)
     const authData = this.auth.auth(netstoragePath, acs_action)
 
diff --git a/package.json b/package.json
index 7a77b40..8089eae 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "netstorageapi",
-  "version": "1.1.5",
+  "version": "1.1.6",
   "description": "Akamai Netstorage API for Node.js",
   "main": "./lib/netstorage.js",
   "scripts": {