diff --git a/src/Test/KernelHelper.php b/src/Test/KernelHelper.php
index 9fcd9c37b..870b1b4ce 100644
--- a/src/Test/KernelHelper.php
+++ b/src/Test/KernelHelper.php
@@ -33,7 +33,7 @@ public static function shutdownKernel(KernelInterface $kernel): void
     {
         $kernel->shutdown();
 
-        if (!class_exists(\PHPUnit\Runner\ErrorHandler::class)) {
+        if (!\class_exists(\PHPUnit\Runner\ErrorHandler::class)) {
             return;
         }