diff --git a/src/Symfony/Component/Console/Tests/Question/QuestionTest.php b/src/Symfony/Component/Console/Tests/Question/QuestionTest.php
index 59b714291a..5da76062c6 100644
--- a/src/Symfony/Component/Console/Tests/Question/QuestionTest.php
+++ b/src/Symfony/Component/Console/Tests/Question/QuestionTest.php
@@ -140,7 +140,7 @@ class QuestionTest extends TestCase
     {
         return [
             ['Potato'],
-            [new \stdclass()],
+            [new \stdClass()],
             [false],
         ];
     }
diff --git a/src/Symfony/Component/Messenger/Command/FailedMessagesRetryCommand.php b/src/Symfony/Component/Messenger/Command/FailedMessagesRetryCommand.php
index 33686e6549..fee4556b05 100644
--- a/src/Symfony/Component/Messenger/Command/FailedMessagesRetryCommand.php
+++ b/src/Symfony/Component/Messenger/Command/FailedMessagesRetryCommand.php
@@ -187,7 +187,7 @@ EOF
 
         $count = 0;
         try {
-            $worker->run([], function (?Envelope $envelope) use ($worker, $io, &$count) {
+            $worker->run([], function (?Envelope $envelope) use ($worker, &$count) {
                 ++$count;
                 if (null === $envelope) {
                     $worker->stop();
diff --git a/src/Symfony/Component/Messenger/Tests/WorkerTest.php b/src/Symfony/Component/Messenger/Tests/WorkerTest.php
index 8c8e54dda9..ad7477253e 100644
--- a/src/Symfony/Component/Messenger/Tests/WorkerTest.php
+++ b/src/Symfony/Component/Messenger/Tests/WorkerTest.php
@@ -378,7 +378,7 @@ class WorkerTest extends TestCase
         $worker = new Worker([$receiver], $bus);
         $workerWithDecorator = new StopWhenMessageCountIsExceededWorker($worker, 2);
         $processedEnvelopes = [];
-        $workerWithDecorator->run([], function (?Envelope $envelope) use ($worker, &$processedEnvelopes) {
+        $workerWithDecorator->run([], function (?Envelope $envelope) use (&$processedEnvelopes) {
             if (null !== $envelope) {
                 $processedEnvelopes[] = $envelope;
             }
diff --git a/src/Symfony/Component/Security/Http/Firewall/LegacyListenerTrait.php b/src/Symfony/Component/Security/Http/Firewall/LegacyListenerTrait.php
index 98933e0f3e..260cb680e0 100644
--- a/src/Symfony/Component/Security/Http/Firewall/LegacyListenerTrait.php
+++ b/src/Symfony/Component/Security/Http/Firewall/LegacyListenerTrait.php
@@ -11,6 +11,7 @@
 
 namespace Symfony\Component\Security\Http\Firewall;
 
+use Symfony\Component\HttpFoundation\Response;
 use Symfony\Component\HttpKernel\Event\GetResponseEvent;
 use Symfony\Component\HttpKernel\Event\RequestEvent;
 
diff --git a/src/Symfony/Component/Security/Http/Tests/Firewall/SwitchUserListenerTest.php b/src/Symfony/Component/Security/Http/Tests/Firewall/SwitchUserListenerTest.php
index e3db00cb00..36842713f8 100644
--- a/src/Symfony/Component/Security/Http/Tests/Firewall/SwitchUserListenerTest.php
+++ b/src/Symfony/Component/Security/Http/Tests/Firewall/SwitchUserListenerTest.php
@@ -109,7 +109,7 @@ class SwitchUserListenerTest extends TestCase
     public function testExitUserBasedOnSwitchUserRoleUpdatesToken()
     {
         $originalToken = new UsernamePasswordToken('username', '', 'key', []);
-        $this->tokenStorage->setToken(new UsernamePasswordToken('username', '', 'key', [new SwitchUserRole('ROLE_PREVIOUS', $originalToken, false)], $originalToken));
+        $this->tokenStorage->setToken(new UsernamePasswordToken('username', '', 'key', [new SwitchUserRole('ROLE_PREVIOUS', $originalToken, false)]));
 
         $this->request->query->set('_switch_user', SwitchUserListener::EXIT_VALUE);