diff --git a/src/Symfony/Component/Messenger/Tests/Command/FailedMessagesRetryCommandTest.php b/src/Symfony/Component/Messenger/Tests/Command/FailedMessagesRetryCommandTest.php
index bc69a1c2e8..bcc67f79d5 100644
--- a/src/Symfony/Component/Messenger/Tests/Command/FailedMessagesRetryCommandTest.php
+++ b/src/Symfony/Component/Messenger/Tests/Command/FailedMessagesRetryCommandTest.php
@@ -13,15 +13,12 @@ namespace Symfony\Component\Messenger\Tests\Command;
 
 use PHPUnit\Framework\TestCase;
 use Symfony\Component\Console\Tester\CommandTester;
-use Symfony\Component\Debug\Exception\FlattenException;
 use Symfony\Component\EventDispatcher\EventDispatcherInterface;
 use Symfony\Component\Messenger\Command\FailedMessagesRetryCommand;
 use Symfony\Component\Messenger\Envelope;
 use Symfony\Component\Messenger\MessageBusInterface;
-use Symfony\Component\Messenger\Retry\RetryStrategyInterface;
-use Symfony\Component\Messenger\Stamp\ReceivedStamp;
-use Symfony\Component\Messenger\Stamp\RedeliveryStamp;
 use Symfony\Component\Messenger\Transport\Receiver\ListableReceiverInterface;
+use Symfony\Component\Messenger\Worker;
 
 class FailedMessagesRetryCommandTest extends TestCase
 {
@@ -37,52 +34,16 @@ class FailedMessagesRetryCommandTest extends TestCase
         // the bus should be called in the worker
         $bus->expects($this->exactly(2))->method('dispatch')->willReturn(new Envelope(new \stdClass()));
 
-        $command = new FailedMessagesRetryCommand('failure_receiver', $receiver, $bus, $dispatcher);
+        $command = new FailedMessagesRetryCommand(
+            'failure_receiver',
+            $receiver,
+            $bus,
+            $dispatcher
+        );
 
         $tester = new CommandTester($command);
         $tester->execute(['id' => [10, 12]]);
 
         $this->assertStringContainsString('[OK]', $tester->getDisplay());
     }
-
-    public function testExceptionOnRetry()
-    {
-        $receiver = $this->createMock(ListableReceiverInterface::class);
-        $receiver->expects($this->once())->method('find')->with(10)->willReturn(new Envelope(new \stdClass()));
-        // message will eventually be ack'ed in Worker
-        $receiver->expects($this->once())->method('ack');
-
-        $dispatcher = $this->createMock(EventDispatcherInterface::class);
-        $bus = $this->createMock(MessageBusInterface::class);
-        // the bus should be called in the worker
-        $bus->expects($this->at(0))
-            ->method('dispatch')
-            ->with($this->callback(function (Envelope $envelope) {
-                $lastReceivedStamp = $envelope->last(ReceivedStamp::class);
-
-                return $lastReceivedStamp instanceof ReceivedStamp && \is_string($lastReceivedStamp->getTransportName());
-            }))
-            ->will($this->throwException(new \Exception('Mock test exception')));
-
-        $bus->expects($this->at(1))
-            ->method('dispatch')
-            ->with($this->callback(function (Envelope $envelope) {
-                $lastRedeliveryStamp = $envelope->last(RedeliveryStamp::class);
-
-                return $lastRedeliveryStamp instanceof RedeliveryStamp &&
-                    \is_string($lastRedeliveryStamp->getExceptionMessage()) &&
-                    $lastRedeliveryStamp->getFlattenException() instanceof FlattenException;
-            }))
-            ->willReturn(new Envelope(new \stdClass()));
-
-        $retryStrategy = $this->createMock(RetryStrategyInterface::class);
-        $retryStrategy->expects($this->once())->method('isRetryable')->with($this->isInstanceOf(Envelope::class))->willReturn(true);
-
-        $command = new FailedMessagesRetryCommand('failure_receiver', $receiver, $bus, $dispatcher, $retryStrategy);
-
-        $tester = new CommandTester($command);
-        $tester->execute(['id' => [10]]);
-
-        $this->assertStringContainsString('[OK]', $tester->getDisplay());
-    }
 }
diff --git a/src/Symfony/Component/Messenger/Worker.php b/src/Symfony/Component/Messenger/Worker.php
index 3ce1bd79e5..398124e994 100644
--- a/src/Symfony/Component/Messenger/Worker.php
+++ b/src/Symfony/Component/Messenger/Worker.php
@@ -12,7 +12,6 @@
 namespace Symfony\Component\Messenger;
 
 use Psr\Log\LoggerInterface;
-use Symfony\Component\Debug\Exception\FlattenException;
 use Symfony\Component\EventDispatcher\LegacyEventDispatcherProxy;
 use Symfony\Component\Messenger\Event\WorkerMessageFailedEvent;
 use Symfony\Component\Messenger\Event\WorkerMessageHandledEvent;
@@ -154,7 +153,7 @@ class Worker implements WorkerInterface
 
                 // add the delay and retry stamp info + remove ReceivedStamp
                 $retryEnvelope = $envelope->with(new DelayStamp($delay))
-                    ->with(new RedeliveryStamp($retryCount, $transportName, $throwable->getMessage(), $this->flattenedException($throwable)))
+                    ->with(new RedeliveryStamp($retryCount, $transportName))
                     ->withoutAll(ReceivedStamp::class);
 
                 // re-send the message
@@ -217,17 +216,4 @@ class Worker implements WorkerInterface
 
         return $retryStrategy->isRetryable($envelope);
     }
-
-    private function flattenedException(\Throwable $throwable): ?FlattenException
-    {
-        if (!class_exists(FlattenException::class)) {
-            return null;
-        }
-
-        if ($throwable instanceof HandlerFailedException) {
-            $throwable = $throwable->getNestedExceptions()[0];
-        }
-
-        return FlattenException::createFromThrowable($throwable);
-    }
 }