diff --git a/core/lib/Drupal/Core/Config/ConfigFactory.php b/core/lib/Drupal/Core/Config/ConfigFactory.php
index 8c06cd1edf..ff3f835640 100644
--- a/core/lib/Drupal/Core/Config/ConfigFactory.php
+++ b/core/lib/Drupal/Core/Config/ConfigFactory.php
@@ -201,7 +201,7 @@ protected function doLoadMultiple(array $names, $immutable = TRUE) {
    * @return array
    *   An array of overrides keyed by the configuration object name.
    */
-  protected function loadOverrides(array $names) {
+  public function loadOverrides(array $names) {
     $overrides = [];
     foreach ($this->configFactoryOverrides as $override) {
       // Existing overrides take precedence since these will have been added