diff --git a/lib/ace/autocomplete/popup.js b/lib/ace/autocomplete/popup.js
index a151c746..ead0c47c 100644
--- a/lib/ace/autocomplete/popup.js
+++ b/lib/ace/autocomplete/popup.js
@@ -31,7 +31,6 @@
 define(function(require, exports, module) {
 "use strict";
 
-var EditSession = require("../edit_session").EditSession;
 var Renderer = require("../virtual_renderer").VirtualRenderer;
 var Editor = require("../editor").Editor;
 var Range = require("../range").Range;