diff --git a/README.md b/README.md
index 75459ef..85fe28b 100644
--- a/README.md
+++ b/README.md
@@ -4,7 +4,7 @@ Write minimal node index.js files that require and export siblings by file basen
 
 # Latest Version
 
-0.1.3
+0.1.4
 
 # Installation
 ```
@@ -17,7 +17,7 @@ or in package.json
 {
   ...
   "dependencies": {
-    "requireindex": "~0.1.3"
+    "requireindex": "~0.1.4"
   }
 }
 ```
diff --git a/index.js b/index.js
index d214eda..9f96bdd 100644
--- a/index.js
+++ b/index.js
@@ -1,26 +1,28 @@
-var fs   = require('fs'),
-    path = require('path');
+(function() {
+  var fs   = require('fs'),
+      path = require('path');
 
-module.exports = function(dir, basenames) {
-  var requires = {};
+  module.exports = function(dir, basenames) {
+    var requires = {};
   
-  if (arguments.length === 1) {  
-    fs.readdirSync(dir).forEach(function(filename) {
+    if (arguments.length === 1) {  
+      fs.readdirSync(dir).forEach(function(filename) {
   
-      if ((filename === 'index.js') || (filename[0] === '_')) { return; }
+        if ((filename === 'index.js') || (filename[0] === '_')) { return; }
     
-      filename = path.basename(filename, path.extname(filename));
-      var filepath = path.join(dir, filename);
+        filename = path.basename(filename, path.extname(filename));
+        var filepath = path.join(dir, filename);
     
-      requires[filename] = require(filepath);
-    });
+        requires[filename] = require(filepath);
+      });
   
-  } else {
-    basenames.forEach(function(basename) {
-      var filepath = path.join(dir, basename);
-      requires[basename] = require(filepath);
-    });
-  }
+    } else {
+      basenames.forEach(function(basename) {
+        var filepath = path.join(dir, basename);
+        requires[basename] = require(filepath);
+      });
+    }
   
-  return requires;
-};
\ No newline at end of file
+    return requires;
+  };
+})();
\ No newline at end of file
diff --git a/package.json b/package.json
index 05323b0..1bf7100 100644
--- a/package.json
+++ b/package.json
@@ -3,7 +3,7 @@
   
   "description": "Write minimal node index.js files that require and export siblings by file basename",
   
-  "version": "0.1.3",
+  "version": "0.1.4",
   
   "license" : "MIT",