diff --git a/includes/utilities.inc b/includes/utilities.inc
index 8faf5c5..d69ce43 100644
--- a/includes/utilities.inc
+++ b/includes/utilities.inc
@@ -170,17 +170,21 @@ function upei_roblib_ill_clean_array($values)
   unset($arr['doi']);
   unset($arr['doi_button']);
   unset($arr['honeypot_time']);
+  unset($arr['captcha_sid']);
+  unset($arr['captcha_token']);
+  unset($arr['captcha_response']);
   array_walk($arr, 'upei_roblib_ill_check_arr_item');
   return $arr;
 }
 
-function upei_roblib_ill_check_arr_item(&$value, $key) {
+function upei_roblib_ill_check_arr_item(&$value, $key)
+{
   if (is_array($value)) {
     array_walk($value, 'upei_roblib_ill_check_arr_item');
   }
-  //else {
-  //  $value = Xss::filter($value);
-  //}
+//else {
+//  $value = Xss::filter($value);
+//}
 }
 
 
@@ -196,7 +200,7 @@ function upei_roblib_ill_check_arr_item(&$value, $key) {
  */
 function upei_roblib_format_biblio_info($form_state)
 {
-  $values  = $form_state->getValues();
+  $values = $form_state->getValues();
   $data = upei_roblib_ill_clean_array($values);
   $rows = [];
   foreach ($data as $key => $value) {
@@ -213,4 +217,4 @@ function upei_roblib_format_biblio_info($form_state)
   ];
   $html_output = \Drupal::service('renderer')->render($output);
   return $html_output;
-}
+}
\ No newline at end of file