diff --git a/encoding/iso2022.js b/encoding/iso2022.js
index 99d4fdb..afff88a 100644
--- a/encoding/iso2022.js
+++ b/encoding/iso2022.js
@@ -1,4 +1,4 @@
-var util = require('../util'),
+var util = require('util'),
   Match = require ('../match');
 
 
diff --git a/encoding/mbcs.js b/encoding/mbcs.js
index b6da630..5aa1557 100644
--- a/encoding/mbcs.js
+++ b/encoding/mbcs.js
@@ -1,4 +1,4 @@
-var util = require('../util'),
+var util = require('util'),
   Match = require ('../match');
 
 /**
diff --git a/encoding/sbcs.js b/encoding/sbcs.js
index e79c738..80d525e 100644
--- a/encoding/sbcs.js
+++ b/encoding/sbcs.js
@@ -1,4 +1,4 @@
-var util = require('../util'),
+var util = require('util'),
   Match = require ('../match');
 
 /**
diff --git a/encoding/unicode.js b/encoding/unicode.js
index 6c5a907..6458d79 100644
--- a/encoding/unicode.js
+++ b/encoding/unicode.js
@@ -1,5 +1,5 @@
 'use strict';
-var util = require('../util'),
+var util = require('util'),
   Match = require ('../match');
 
 /**
diff --git a/fs.js b/fs.js
deleted file mode 100644
index 36a48a0..0000000
--- a/fs.js
+++ /dev/null
@@ -1,46 +0,0 @@
-var fs = require('fs');
-var self = require('./index');
-
-module.exports.detectFile = function(filepath, opts, cb) {
-    if (typeof opts === 'function') {
-      cb = opts;
-      opts = undefined;
-    }
-  
-    var fd;
-  
-    var handler = function(err, buffer) {
-      if (fd) {
-        fs.closeSync(fd);
-      }
-  
-      if (err) return cb(err, null);
-      cb(null, self.detect(buffer, opts));
-    };
-  
-    if (opts && opts.sampleSize) {
-      fd = fs.openSync(filepath, 'r'),
-        sample = Buffer.allocUnsafe(opts.sampleSize);
-  
-      fs.read(fd, sample, 0, opts.sampleSize, null, function(err) {
-        handler(err, sample);
-      });
-      return;
-    }
-  
-    fs.readFile(filepath, handler);
-  };
-  
-  module.exports.detectFileSync = function(filepath, opts) {
-    if (opts && opts.sampleSize) {
-      var fd = fs.openSync(filepath, 'r'),
-        sample = Buffer.allocUnsafe(opts.sampleSize);
-  
-      fs.readSync(fd, sample, 0, opts.sampleSize);
-      fs.closeSync(fd);
-      return self.detect(sample, opts);
-    }
-  
-    return self.detect(fs.readFileSync(filepath), opts);
-  };
-  
\ No newline at end of file
diff --git a/index.js b/index.js
index 26bd737..91b2bec 100644
--- a/index.js
+++ b/index.js
@@ -1,3 +1,6 @@
+
+var fs = require('fs');
+
 var utf8  = require('./encoding/utf8'),
   unicode = require('./encoding/unicode'),
   mbcs    = require('./encoding/mbcs'),
@@ -75,6 +78,49 @@ module.exports.detect = function(buffer, opts) {
   }
 };
 
+module.exports.detectFile = function(filepath, opts, cb) {
+  if (typeof opts === 'function') {
+    cb = opts;
+    opts = undefined;
+  }
+
+  var fd;
+
+  var handler = function(err, buffer) {
+    if (fd) {
+      fs.closeSync(fd);
+    }
+
+    if (err) return cb(err, null);
+    cb(null, self.detect(buffer, opts));
+  };
+
+  if (opts && opts.sampleSize) {
+    fd = fs.openSync(filepath, 'r'),
+      sample = Buffer.allocUnsafe(opts.sampleSize);
+
+    fs.read(fd, sample, 0, opts.sampleSize, null, function(err) {
+      handler(err, sample);
+    });
+    return;
+  }
+
+  fs.readFile(filepath, handler);
+};
+
+module.exports.detectFileSync = function(filepath, opts) {
+  if (opts && opts.sampleSize) {
+    var fd = fs.openSync(filepath, 'r'),
+      sample = Buffer.allocUnsafe(opts.sampleSize);
+
+    fs.readSync(fd, sample, 0, opts.sampleSize);
+    fs.closeSync(fd);
+    return self.detect(sample, opts);
+  }
+
+  return self.detect(fs.readFileSync(filepath), opts);
+};
+
 // Wrappers for the previous functions to return all encodings
 module.exports.detectAll = function(buffer, opts) {
   if (typeof opts !== 'object') {
diff --git a/util.js b/util.js
deleted file mode 100644
index 037d986..0000000
--- a/util.js
+++ /dev/null
@@ -1,5 +0,0 @@
-module.exports.inherits = function(a, b) {
-    for (var key of Object.keys(b.prototype)) {
-        a.prototype[key] = b.prototype[key];
-    }
-}