diff --git a/core/lib/Drupal/Core/DrupalKernel.php b/core/lib/Drupal/Core/DrupalKernel.php
index 9714106..adb8075 100644
--- a/core/lib/Drupal/Core/DrupalKernel.php
+++ b/core/lib/Drupal/Core/DrupalKernel.php
@@ -258,6 +258,7 @@ public static function createFromRequest(Request $request, $class_loader, $envir
       $class_loader->unregister();
       $apc_loader->register();
       $class_loader = $apc_loader;
+      $kernel->classLoader = $class_loader;
     }
 
     return $kernel;