diff --git a/chrome/content/zotero/xpcom/zotero.js b/chrome/content/zotero/xpcom/zotero.js
index 6843df52e..0562d24a3 100644
--- a/chrome/content/zotero/xpcom/zotero.js
+++ b/chrome/content/zotero/xpcom/zotero.js
@@ -430,6 +430,8 @@ Components.utils.import("resource://gre/modules/osfile.jsm");
 	
 	
 	var _addToolbarIcon = function () {
+		if (Zotero.isStandalone) return;
+		
 		// Add toolbar icon
 		try {
 			Services.scriptloader.loadSubScript("chrome://zotero/content/icon.js", {}, "UTF-8");