diff --git a/chrome/content/zotero/standalone/extensionsOverlay.js b/chrome/content/zotero/standalone/extensionsOverlay.js
deleted file mode 100644
index dd7c1e51a6..0000000000
--- a/chrome/content/zotero/standalone/extensionsOverlay.js
+++ /dev/null
@@ -1,113 +0,0 @@
-/*
-    ***** BEGIN LICENSE BLOCK *****
-    
-    Copyright © 2011 Center for History and New Media
-                     George Mason University, Fairfax, Virginia, USA
-                     http://zotero.org
-    
-    This file is part of Zotero.
-    
-    Zotero is free software: you can redistribute it and/or modify
-    it under the terms of the GNU Affero General Public License as published by
-    the Free Software Foundation, either version 3 of the License, or
-    (at your option) any later version.
-    
-    Zotero is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU Affero General Public License for more details.
-    
-    You should have received a copy of the GNU Affero General Public License
-    along with Zotero.  If not, see <http://www.gnu.org/licenses/>.
-    
-    The Original Code is the Extension Manager UI.
-    
-    The Initial Developer of the Original Code is the Mozilla Foundation.
-    Portions created by the Initial Developer are Copyright (C) 2010
-    the Initial Developer. All Rights Reserved.
-    
-    Contributor(s):
-      Blair McBride <bmcbride@mozilla.com>
-      Simon Kornblith <simon@zotero.org</a>
-    
-    ***** END LICENSE BLOCK *****
-*/
-
-gDiscoverView.onLocationChange = function(aWebProgress, aRequest, aLocation) {
-	// Ignore the about:blank load
-	if (aLocation.spec == "about:blank")
-		return;
-
-	// When using the real session history the inner-frame will update the
-	// session history automatically, if using the fake history though it must
-	// be manually updated
-	if (gHistory == FakeHistory) {
-		var docshell = aWebProgress.QueryInterface(Ci.nsIDocShell);
-
-		var state = {
-			view: "addons://discover/",
-			url: aLocation.spec
-		};
-
-		var replaceHistory = Ci.nsIWebNavigation.LOAD_FLAGS_REPLACE_HISTORY << 16;
-		if (docshell.loadType & replaceHistory)
-			gHistory.replaceState(state);
-		else
-			gHistory.pushState(state);
-		gViewController.lastHistoryIndex = gHistory.index;
-	}
-
-	gViewController.updateCommands();
-	
-	// In Zotero, we override the behavior below to allow pages on other sites
-	
-	/*// If the hostname is the same as the new location's host and either the
-	// default scheme is insecure or the new location is secure then continue
-	// with the load
-	if (aLocation.host == this.homepageURL.host &&
-			(!this.homepageURL.schemeIs("https") || aLocation.schemeIs("https")))
-		return;
-
-	// Canceling the request will send an error to onStateChange which will show
-	// the error page
-	aRequest.cancel(Components.results.NS_BINDING_ABORTED);*/
-};
-
-gDiscoverView.onStateChange = function(aWebProgress, aRequest, aStateFlags, aStatus) {
-	// Only care about the network events
-	if (!(aStateFlags & (Ci.nsIWebProgressListener.STATE_IS_NETWORK)))
-		return;
-
-	// If this is the start of network activity then show the loading page
-	if (aStateFlags & (Ci.nsIWebProgressListener.STATE_START))
-		this.node.selectedPanel = this._loading;
-
-	// Ignore anything except stop events
-	if (!(aStateFlags & (Ci.nsIWebProgressListener.STATE_STOP)))
-		return;
-
-	// Consider the successful load of about:blank as still loading
-	if (aRequest instanceof Ci.nsIChannel && aRequest.URI.spec == "about:blank")
-		return;
-
-	// If there was an error loading the page or the new hostname is not the
-	// same as the default hostname or the default scheme is secure and the new
-	// scheme is insecure then show the error page
-	if (aRequest && aRequest instanceof Ci.nsIHttpChannel && !aRequest.requestSucceeded) {
-		this.showError();
-	} else {
-		// Got a successful load, make sure the browser is visible
-		this.node.selectedPanel = this._browser;
-		gViewController.updateCommands();
-	}
-
-	var listeners = this._loadListeners;
-	this._loadListeners = [];
-
-	listeners.forEach(function(aListener) {
-		aListener();
-	});
-};
-
-// Don't care about http/https
-gDiscoverView.onSecurityChange = function() {};
\ No newline at end of file
diff --git a/chrome/content/zotero/standalone/extensionsOverlay.xul b/chrome/content/zotero/standalone/extensionsOverlay.xul
deleted file mode 100644
index 24d3f1b93b..0000000000
--- a/chrome/content/zotero/standalone/extensionsOverlay.xul
+++ /dev/null
@@ -1,9 +0,0 @@
-<?xml version="1.0"?>
-<overlay id="zotero-addons"
-	xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
-	
-	<textbox id="header-search" hidden="true"/>
-	<page id="addons-page">
-		<script type="application/javascript" src="chrome://zotero/content/standalone/extensionsOverlay.js"/>
-	</page>
-</overlay>