diff --git a/chrome/content/zotero/itemPane.js b/chrome/content/zotero/itemPane.js
index 7bb2c24e07..904da3bfc9 100644
--- a/chrome/content/zotero/itemPane.js
+++ b/chrome/content/zotero/itemPane.js
@@ -325,7 +325,7 @@ var ZoteroItemPane = new function() {
 	
 	
 	this.onTagsContextPopupShowing = function () {
-		if (!_lastItem.editable) {
+		if (!_lastItem.isEditable()) {
 			return false;
 		}
 	}