diff --git a/core/modules/views/lib/Drupal/views/Plugin/views/filter/FilterPluginBase.php b/core/modules/views/lib/Drupal/views/Plugin/views/filter/FilterPluginBase.php
index e0dd2d5..8d64040 100644
--- a/core/modules/views/lib/Drupal/views/Plugin/views/filter/FilterPluginBase.php
+++ b/core/modules/views/lib/Drupal/views/Plugin/views/filter/FilterPluginBase.php
@@ -1252,7 +1252,7 @@ function convert_exposed_input(&$input, $selected_group_id = NULL) {
    * as widget, and therefore has to be applied several times, one per
    * item selected.
    */
-  function group_multiple_exposed_input(&$input) {
+  function groupMultipleExposedInput(&$input) {
     if (!empty($input[$this->options['group_info']['identifier']])) {
     return array_filter($input[$this->options['group_info']['identifier']]);
     }
diff --git a/core/modules/views/lib/Drupal/views/ViewExecutable.php b/core/modules/views/lib/Drupal/views/ViewExecutable.php
index a8a8dd2..f4302f1 100644
--- a/core/modules/views/lib/Drupal/views/ViewExecutable.php
+++ b/core/modules/views/lib/Drupal/views/ViewExecutable.php
@@ -1137,7 +1137,7 @@ public function _build($key) {
       if (!empty($handlers[$id]) && is_object($handlers[$id])) {
         $multiple_exposed_input = array(0 => NULL);
         if ($handlers[$id]->multipleExposedInput()) {
-          $multiple_exposed_input = $handlers[$id]->group_multiple_exposed_input($this->exposed_data);
+          $multiple_exposed_input = $handlers[$id]->groupMultipleExposedInput($this->exposed_data);
         }
         foreach ($multiple_exposed_input as $group_id) {
           // Give this handler access to the exposed filter input.