diff --git a/core/modules/views/lib/Drupal/views/Plugin/views/filter/String.php b/core/modules/views/lib/Drupal/views/Plugin/views/filter/String.php
index c80e39d..22ad2b4 100644
--- a/core/modules/views/lib/Drupal/views/Plugin/views/filter/String.php
+++ b/core/modules/views/lib/Drupal/views/Plugin/views/filter/String.php
@@ -59,13 +59,13 @@ function operators() {
       'word' => array(
         'title' => t('Contains any word'),
         'short' => t('has word'),
-        'method' => 'op_word',
+        'method' => 'addContainsWord',
         'values' => 1,
       ),
       'allwords' => array(
         'title' => t('Contains all words'),
         'short' => t('has all'),
-        'method' => 'op_word',
+        'method' => 'addContainsWord',
         'values' => 1,
       ),
       'starts' => array(
@@ -268,7 +268,7 @@ function op_contains($field) {
     $this->query->add_where($this->options['group'], $field, '%' . db_like($this->value) . '%', 'LIKE');
   }
 
-  function op_word($field) {
+  function addContainsWord($field) {
     $where = $this->operator == 'word' ? db_or() : db_and();
 
     // Don't filter on empty strings.