diff --git a/chrome/content/zotero/elements/itemBox.js b/chrome/content/zotero/elements/itemBox.js
index bef788e824..d5fb02a4b4 100644
--- a/chrome/content/zotero/elements/itemBox.js
+++ b/chrome/content/zotero/elements/itemBox.js
@@ -304,6 +304,7 @@
 			}
 			
 			this._item = val;
+			this._lastTabIndex = null;
 			this.scrollToTop();
 			this.refresh();
 		}