diff --git a/core/modules/views/lib/Drupal/views/Plugin/views/field/FieldPluginBase.php b/core/modules/views/lib/Drupal/views/Plugin/views/field/FieldPluginBase.php
index 328bbfa1bcb..6655d6a547b 100644
--- a/core/modules/views/lib/Drupal/views/Plugin/views/field/FieldPluginBase.php
+++ b/core/modules/views/lib/Drupal/views/Plugin/views/field/FieldPluginBase.php
@@ -287,7 +287,7 @@ abstract class FieldPluginBase extends HandlerBase {
   /**
    * Return the class of the field.
    */
-  function element_classes($row_index = NULL) {
+  public function elementClasses($row_index = NULL) {
     $classes = explode(' ', $this->options['element_class']);
     foreach ($classes as &$class) {
       $class = $this->tokenizeValue($class, $row_index);
diff --git a/core/modules/views/views.theme.inc b/core/modules/views/views.theme.inc
index 9afee406d22..fdccef2ace7 100644
--- a/core/modules/views/views.theme.inc
+++ b/core/modules/views/views.theme.inc
@@ -222,7 +222,7 @@ function template_preprocess_views_view_fields(&$vars) {
           $attributes['class'][] = 'field-content';
         }
 
-        if ($classes = $object->handler->element_classes($view->row_index)) {
+        if ($classes = $object->handler->elementClasses($view->row_index)) {
           $attributes['class'][] = $classes;
         }
         $attributes = new Attribute($attributes);
@@ -648,7 +648,7 @@ function template_preprocess_views_view_table(&$vars) {
       }
       $vars['field_classes'][$field][$num] = new Attribute($vars['field_classes'][$field][$num]);
 
-      if ($classes = $fields[$field]->element_classes($num)) {
+      if ($classes = $fields[$field]->elementClasses($num)) {
         $vars['field_classes'][$field][$num]['class'][] = $classes;
       }
       // Add responsive header classes.