diff --git a/core/modules/views/lib/Drupal/views/Plugin/views/query/Sql.php b/core/modules/views/lib/Drupal/views/Plugin/views/query/Sql.php
index 3f7c8bd..f268bc2 100644
--- a/core/modules/views/lib/Drupal/views/Plugin/views/query/Sql.php
+++ b/core/modules/views/lib/Drupal/views/Plugin/views/query/Sql.php
@@ -1728,7 +1728,7 @@ function get_aggregation_info() {
     );
   }
 
-  function aggregation_method_simple($group_type, $field) {
+  function aggregationMethodSimple($group_type, $field) {
     return strtoupper($group_type) . '(' . $field . ')';
   }