diff --git a/src/Symfony/Component/Messenger/Tests/Transport/Doctrine/DoctrineTransportTest.php b/src/Symfony/Component/Messenger/Tests/Transport/Doctrine/DoctrineTransportTest.php
new file mode 100644
index 000000000000..145397f889a0
--- /dev/null
+++ b/src/Symfony/Component/Messenger/Tests/Transport/Doctrine/DoctrineTransportTest.php
@@ -0,0 +1,60 @@
+<?php
+
+/*
+* This file is part of the symfony project.
+*
+* (c) Vincent Touzet <vincent.touzet@dotsafe.fr>
+*
+* For the full copyright and license information, please view the LICENSE
+* file that was distributed with this source code.
+*/
+
+namespace Symfony\Component\Messenger\Tests\Transport\Doctrine;
+
+use PHPUnit\Framework\TestCase;
+use Symfony\Component\Messenger\Envelope;
+use Symfony\Component\Messenger\Tests\Fixtures\DummyMessage;
+use Symfony\Component\Messenger\Transport\Doctrine\Connection;
+use Symfony\Component\Messenger\Transport\Doctrine\DoctrineTransport;
+use Symfony\Component\Messenger\Transport\Serialization\SerializerInterface;
+use Symfony\Component\Messenger\Transport\TransportInterface;
+
+class DoctrineTransportTest extends TestCase
+{
+    public function testItIsATransport()
+    {
+        $transport = $this->getTransport();
+
+        $this->assertInstanceOf(TransportInterface::class, $transport);
+    }
+
+    public function testReceivesMessages()
+    {
+        $transport = $this->getTransport(
+            $serializer = $this->getMockBuilder(SerializerInterface::class)->getMock(),
+            $connection = $this->getMockBuilder(Connection::class)->disableOriginalConstructor()->getMock()
+        );
+
+        $decodedMessage = new DummyMessage('Decoded.');
+
+        $doctrineEnvelope = [
+            'id' => '5',
+            'body' => 'body',
+            'headers' => ['my' => 'header'],
+        ];
+
+        $serializer->method('decode')->with(['body' => 'body', 'headers' => ['my' => 'header']])->willReturn(new Envelope($decodedMessage));
+        $connection->method('get')->willReturn($doctrineEnvelope);
+
+        $envelopes = iterator_to_array($transport->get());
+        $this->assertSame($decodedMessage, $envelopes[0]->getMessage());
+    }
+
+    private function getTransport(SerializerInterface $serializer = null, Connection $connection = null)
+    {
+        $serializer = $serializer ?: $this->getMockBuilder(SerializerInterface::class)->getMock();
+        $connection = $connection ?: $this->getMockBuilder(Connection::class)->disableOriginalConstructor()->getMock();
+
+        return new DoctrineTransport($connection, $serializer);
+    }
+}
diff --git a/src/Symfony/Component/Messenger/Transport/Doctrine/Connection.php b/src/Symfony/Component/Messenger/Transport/Doctrine/Connection.php
index faf6b8919b19..6a8f2b0bcb09 100644
--- a/src/Symfony/Component/Messenger/Transport/Doctrine/Connection.php
+++ b/src/Symfony/Component/Messenger/Transport/Doctrine/Connection.php
@@ -230,7 +230,7 @@ private function getSchema(): Schema
             ->setNotnull(true);
         $table->addColumn('body', Type::TEXT)
             ->setNotnull(true);
-        $table->addColumn('headers', Type::STRING)
+        $table->addColumn('headers', Type::TEXT)
             ->setNotnull(true);
         $table->addColumn('queue_name', Type::STRING)
             ->setNotnull(true);
diff --git a/src/Symfony/Component/Messenger/Transport/Doctrine/DoctrineTransport.php b/src/Symfony/Component/Messenger/Transport/Doctrine/DoctrineTransport.php
index b9c1d8ee8c00..09d9d5cadfa9 100644
--- a/src/Symfony/Component/Messenger/Transport/Doctrine/DoctrineTransport.php
+++ b/src/Symfony/Component/Messenger/Transport/Doctrine/DoctrineTransport.php
@@ -39,7 +39,7 @@ public function __construct(Connection $connection, SerializerInterface $seriali
      */
     public function get(): iterable
     {
-        ($this->receiver ?? $this->getReceiver())->get();
+        return ($this->receiver ?? $this->getReceiver())->get();
     }
 
     /**