diff --git a/install.js b/install.js
index 58cdc066..7d64638f 100644
--- a/install.js
+++ b/install.js
@@ -10,6 +10,7 @@ var https = require('https');
 var fs = require('fs');
 var path = require('path');
 var exec = require('child_process').exec;
+var spawn = require('child_process').spawn;
 var os = require('os');
 
 var libFiles = [
@@ -270,8 +271,8 @@ function doDownloads(next) {
     });
 }
 
-function run(cmdLine, expectedExitCode, next) {
-    var child = exec(cmdLine);
+function run(cmdLine, args, expectedExitCode, next) {
+    var child = spawn(cmdLine, { shell: true });
 
     if (typeof expectedExitCode === 'undefined') {
         expectedExitCode = 0;
@@ -340,9 +341,9 @@ function isPreInstallMode() {
 // Start
 if (os.platform() !== 'win32') {
     if (isPreInstallMode()) {
-        run('make libsodium');
+        run('make', ['libsodium']);
     } else {
-        run('make nodesodium');
+        run('make', ['nodesodium']);
     }
 } else {
     checkMSVSVersion();
@@ -357,7 +358,7 @@ if (os.platform() !== 'win32') {
         });
     } else {
         console.log('Install Mode');
-        run('node-gyp rebuild', 0, function() {
+        run('node-gyp', ['rebuild'], 0, function() {
             console.log('Copy lib files to Release folder');
             files = libFiles.slice(0); // clone array
             copyFiles(files, function() {
@@ -366,4 +367,4 @@ if (os.platform() !== 'win32') {
             });
         });
     }
-}
\ No newline at end of file
+}
diff --git a/lib/box.js b/lib/box.js
index aa2c8245..25e49801 100644
--- a/lib/box.js
+++ b/lib/box.js
@@ -15,8 +15,8 @@ var assert = require('assert');
 /**
  * Public-key authenticated encryption: Box
  *
- * @param {String|Buffer|Array} secretKey sender's private key.
  * @param {String|Buffer|Array} publicKey recipient's public key.
+ * @param {String|Buffer|Array} secretKey sender's private key.
  * @param {Boolean} easy        Use regular or easy mode. Defaults to regular
  *
  * @see Keys
@@ -144,17 +144,17 @@ module.exports = function Box(publicKey, secretKey, easy) {
      * @param {Buffer|String|Array} nonce       the nonce used to encrypt
      * @param {String} [encoding]               the encoding to used in cipherText, nonce, plainText
      */
-    self.decrypt = function (cipherBox, encoding) {
+    self.decrypt = function (cipherText, nonce, encoding) {
         encoding = String(encoding || self.defaultEncoding);
 
-        assert(typeof cipherBox == 'object' && cipherBox.hasOwnProperty('cipherText') && cipherBox.hasOwnProperty('nonce'), 'cipherBox is an object with properties `cipherText` and `nonce`.');
-        assert(cipherBox.cipherText instanceof Buffer, 'cipherBox should have a cipherText property that is a buffer') ;
+        assert(cipherText instanceof Buffer, 'cipherText property that is a buffer') ;
+        assert(nonce instanceof Buffer, 'nonce property that is a buffer') ;
 
-        var nonce = new Nonce(cipherBox.nonce);
+        //var nonce = new Nonce(cipherBox.nonce); nonce.get()
 
         var plainText = (self.easy ? binding.crypto_box_open_easy : binding.crypto_box_open)(
-            cipherBox.cipherText,
-            nonce.get(),
+            cipherText,
+            nonce,
             self.boxKey.getPublicKey().get(),
             self.boxKey.getSecretKey().get()
         );
@@ -170,4 +170,3 @@ module.exports = function Box(publicKey, secretKey, easy) {
     self.close = self.encrypt;
     self.open = self.decrypt;
 };
-
diff --git a/package.json b/package.json
index ed08ea5c..da034406 100644
--- a/package.json
+++ b/package.json
@@ -7,7 +7,7 @@
   "main": "index.js",
   "description": "Lib Sodium port for node.js",
   "dependencies": {
-    "nan": "^2.2.1"
+    "nan": "2.2.1"
   },
   "devDependencies": {
     "mdextract": "^1.0.0",