diff --git a/packages/tester-bundle/Tests/bootstrap.php b/packages/tester-bundle/Tests/bootstrap.php
new file mode 100644
index 000000000..daaed0949
--- /dev/null
+++ b/packages/tester-bundle/Tests/bootstrap.php
@@ -0,0 +1,10 @@
+<?php
+
+declare(strict_types=1);
+
+use Symfony\Component\ErrorHandler\ErrorHandler;
+
+$phpunitsHandler = set_error_handler(static fn () => null);
+restore_exception_handler();
+ErrorHandler::register(null);
+set_error_handler($phpunitsHandler);
diff --git a/packages/tester-bundle/Tests/fixtures/config/routing.yaml b/packages/tester-bundle/Tests/fixtures/config/routing.yaml
index 2d9c7bab0..6a1919fd2 100644
--- a/packages/tester-bundle/Tests/fixtures/config/routing.yaml
+++ b/packages/tester-bundle/Tests/fixtures/config/routing.yaml
@@ -1,4 +1,4 @@
 test:
     resource: '@DrawTesterBundle/Tests/Mock/Controller/TestController.php'
-    type: 'annotation'
+    type: 'attribute'
     format: 'json'
diff --git a/packages/tester-bundle/phpunit.xml.dist b/packages/tester-bundle/phpunit.xml.dist
index 08fb1e3fa..8517fc66a 100644
--- a/packages/tester-bundle/phpunit.xml.dist
+++ b/packages/tester-bundle/phpunit.xml.dist
@@ -11,7 +11,7 @@
         convertWarningsToExceptions="true"
         processIsolation="false"
         stopOnFailure="false"
-        bootstrap="vendor/autoload.php"
+        bootstrap="Tests/bootstrap.php"
 >
     <php>
         <ini name="error_reporting" value="-1" />