diff --git a/program/steps/settings/manage_folders.inc b/program/steps/settings/manage_folders.inc
index a8a4083a7..f19d855ac 100644
--- a/program/steps/settings/manage_folders.inc
+++ b/program/steps/settings/manage_folders.inc
@@ -295,8 +295,8 @@ function rcube_subscription_form($attrib)
     $table->add('subscribed', ($protected || $folder['virtual']) ? ($subscribed ? ' •' : ' ') :
         $checkbox_subscribe->show(($subscribed ? $folder_utf8 : ''), array('value' => $folder_utf8)));
     if ($threading_supported) {
-      $table->add('threaded',
-                  $checkbox_threaded->show(($threaded ? $folder_utf8 : ''), array('value' => $folder_utf8)));
+      $table->add('threaded', $folder['virtual'] ? '' :
+            $checkbox_threaded->show(($threaded ? $folder_utf8 : ''), array('value' => $folder_utf8)));
     }
     
     // add rename and delete buttons