diff --git a/index.js b/lib/connection-pool.js
similarity index 81%
rename from index.js
rename to lib/connection-pool.js
index 9b68c36..db2a67e 100644
--- a/index.js
+++ b/lib/connection-pool.js
@@ -1,5 +1,4 @@
-var Connection = require('tedious').Connection;
-var util = require('util');
+var PooledConnection = require('./pooled-connection');
 
 var connectionEventNames = [
   'connect',
@@ -13,22 +12,6 @@ var connectionEventNames = [
   'secure'
 ];
 
-function PooledConnection(pool, config) {
-    Connection.call(this, config);
-    this.pool = pool;
-}
-
-util.inherits(PooledConnection, Connection);
-
-PooledConnection.prototype.close = function() {
-    this.emit('end');
-    this.pool.returnConnectionToPool(this);
-}
-
-PooledConnection.prototype._close = function() {
-    Connection.prototype.close.call(this);
-}
-
 function ConnectionPool(poolConfig, connectionConfig) {
   var pool = this;
 
diff --git a/lib/pooled-connection.js b/lib/pooled-connection.js
new file mode 100644
index 0000000..c595d43
--- /dev/null
+++ b/lib/pooled-connection.js
@@ -0,0 +1,20 @@
+var Connection = require('tedious').Connection;
+var util = require('util');
+
+function PooledConnection(pool, config) {
+    Connection.call(this, config);
+    this.pool = pool;
+}
+
+util.inherits(PooledConnection, Connection);
+
+PooledConnection.prototype.close = function() {
+    this.emit('end');
+    this.pool.returnConnectionToPool(this);
+}
+
+PooledConnection.prototype._close = function() {
+    Connection.prototype.close.call(this);
+}
+
+module.exports = PooledConnection;
diff --git a/package.json b/package.json
index 47c623b..877e8f7 100644
--- a/package.json
+++ b/package.json
@@ -2,7 +2,7 @@
   "name": "tedious-connection-pool",
   "version": "0.0.1",
   "description": "Connection Pool for tedious.",
-  "main": "index.js",
+  "main": "lib/connection-pool.js",
   "scripts": {
     "test": "test"
   },
diff --git a/test/connection-pool.test.js b/test/connection-pool.test.js
index 09e712f..10c5b0a 100644
--- a/test/connection-pool.test.js
+++ b/test/connection-pool.test.js
@@ -1,6 +1,6 @@
 var assert = require('assert')
 var async = require('async')
-var ConnectionPool = require('../index');
+var ConnectionPool = require('../lib/connection-pool');
 var Request = require('tedious').Request;
 
 var connectionConfig = {