diff --git a/lib/replay-buffer.js b/lib/replay-buffer.js
index 498d107..779e577 100644
--- a/lib/replay-buffer.js
+++ b/lib/replay-buffer.js
@@ -1,6 +1,4 @@
 'use strict';
-var util = require('util');
-var events = require('events');
 
 
 
@@ -53,7 +51,6 @@ ReplayBuffer.prototype.replay = function(writable, callback) {
     });
   }
 
-
   // async variation of _duff's device_
   //   https://en.wikipedia.org/wiki/Duff%27s_device
   (function next() {