diff --git a/Tests/DependencyInjection/EventSubscribersAndListenersPassTest.php b/Tests/DependencyInjection/EventSubscribersAndListenersPassTest.php
index 57a0d2c9..bc0dea8c 100644
--- a/Tests/DependencyInjection/EventSubscribersAndListenersPassTest.php
+++ b/Tests/DependencyInjection/EventSubscribersAndListenersPassTest.php
@@ -121,7 +121,7 @@ public function testEventListener()
                     'serializer.pre_serialize' => [
                         [
                             ['my_listener', 'onserializerpreserialize'],
-                            'bar',
+                            'Bar',
                             null
                         ]
                     ]], $call[1][0]);
@@ -161,7 +161,7 @@ public function testEventListenerWithParams()
                     'serializer.pre_serialize' => [
                         [
                             ['my_listener', 'onserializerpreserialize'],
-                            'bar',
+                            'Bar',
                             null
                         ]
                     ]], $call[1][0]);
@@ -196,7 +196,7 @@ public function testEventSubscriber()
                     'serializer.pre_serialize' => [
                         [
                             ['my_listener', 'onserializerpreserialize'],
-                            'bar',
+                            'Bar',
                             'json',
                             null
                         ]