diff --git a/chrome/content/zotero/xpcom/itemTreeView.js b/chrome/content/zotero/xpcom/itemTreeView.js
index 66ae78ce0b..2db1d8a527 100644
--- a/chrome/content/zotero/xpcom/itemTreeView.js
+++ b/chrome/content/zotero/xpcom/itemTreeView.js
@@ -579,9 +579,9 @@ Zotero.ItemTreeView.prototype.sort = function()
 	}
 	
 	if(order)
-		this._dataItems.sort(oppositeSort);
-	else
 		this._dataItems.sort(doSort);
+	else
+		this._dataItems.sort(oppositeSort);
 		
 	this._refreshHashMap();