diff --git a/chrome/content/zotero/tab.js b/chrome/content/zotero/tab.js
index 2dc629748..533d91003 100644
--- a/chrome/content/zotero/tab.js
+++ b/chrome/content/zotero/tab.js
@@ -38,11 +38,6 @@ var ZoteroTab = new function()
 		   .chromeEventHandler.ownerDocument.defaultView;
 		if(!this.containerWindow) return;
 		
-		if(this.containerWindow.ZoteroPane && this.containerWindow.ZoteroPane.itemsView) {
-			this.containerWindow.ZoteroPane.itemsView.unregister();
-			delete this.containerWindow.ZoteroPane.itemsView;
-		}
-		
 		var tabs = (this.containerWindow.gBrowser.tabs
 					? this.containerWindow.gBrowser.tabs : this.containerWindow.gBrowser.mTabs);