diff --git a/chrome/content/zotero/xpcom/locateManager.js b/chrome/content/zotero/xpcom/locateManager.js
index 7f3c93b4e..eda39bf3b 100644
--- a/chrome/content/zotero/xpcom/locateManager.js
+++ b/chrome/content/zotero/xpcom/locateManager.js
@@ -519,7 +519,7 @@ Zotero.LocateManager = new function() {
 				false)
 			  return this;
 			
-			throw Cr.NS_ERROR_NO_INTERFACE;
+			throw Components.results.NS_ERROR_NO_INTERFACE;
 		},
 		
 		// nsIRequestObserver