diff --git a/components/zotero-autocomplete.js b/components/zotero-autocomplete.js
index f376cbed65..9082cf4abd 100644
--- a/components/zotero-autocomplete.js
+++ b/components/zotero-autocomplete.js
@@ -32,6 +32,7 @@ const Ci = Components.interfaces;
 const Cr = Components.results;
 
 Components.utils.import("resource://gre/modules/XPCOMUtils.jsm");
+Components.utils.import("resource://gre/modules/Services.jsm");
 
 var Zotero = Components.classes["@zotero.org/Zotero;1"]
 	.getService(Components.interfaces.nsISupports)