diff --git a/lib/nconf/stores/system.js b/lib/nconf/stores/system.js
index 57fd848..c55c128 100644
--- a/lib/nconf/stores/system.js
+++ b/lib/nconf/stores/system.js
@@ -7,7 +7,6 @@
  */
  
 var util = require('util'),
-    optimist = require('optimist'),
     Memory = require('./memory').Memory;
  
 //
@@ -78,12 +77,12 @@ System.prototype.loadOverrides = function () {
 System.prototype.loadArgv = function () {
   var self = this, 
       argv;
-  
+
   if (typeof this.argv === 'object') {
-    argv = optimist(process.argv.slice(2)).options(this.argv).argv;
+    argv = require('optimist')(process.argv.slice(2)).options(this.argv).argv;
   }
   else if (this.argv) {
-    argv = optimist(process.argv.slice(2)).argv;
+    argv = require('optimist')(process.argv.slice(2)).argv;
   }
   
   if (!argv) {