diff --git a/mailnews/base/resources/content/widgetglue.js b/mailnews/base/resources/content/widgetglue.js
index 2f3c2b0d3958..afffa7ed08d0 100644
--- a/mailnews/base/resources/content/widgetglue.js
+++ b/mailnews/base/resources/content/widgetglue.js
@@ -355,8 +355,8 @@ function MsgRenameFolder()
             {
                 var dialog = window.openDialog(
                     "chrome://messenger/content/newFolderNameDialog.xul",
-                    "",
-                    "chrome",
+                    "newFolder",
+                    "chrome,modal",
                     {title:"Rename Folder",
                               okCallback:RenameFolder});
             }