diff --git a/lib/controls/persistent_search_control.js b/lib/controls/persistent_search_control.js
index 03d43d8..a2cf43e 100644
--- a/lib/controls/persistent_search_control.js
+++ b/lib/controls/persistent_search_control.js
@@ -1,7 +1,6 @@
 var assert = require('assert');
 var asn1 = require('asn1');
 var buffer = require('buffer');
-var log4js = require('log4js');
 var Control = require('./control');
 var util = require('util');