diff --git a/constituentsonly.php b/constituentsonly.php
index eaab62d..9ec24f6 100644
--- a/constituentsonly.php
+++ b/constituentsonly.php
@@ -205,6 +205,7 @@ function constituentsonly_civicrm_searchColumns($objectName, &$headers, &$rows,
 function constituentsonly_civicrm_buildForm($formName, &$form) {
   if ('CRM_Contact_Form_Search_Advanced' == $formName
     && !($form->getVar('_action') == CRM_Core_Action::DELETE)
+    && empty($form->_searchPane)
   ) {
     $form->addElement('checkbox', 'ignore_constituent_search', ts('Include non-constituents'));
     CRM_Core_Region::instance('page-body')->add(array(