diff --git a/src/Symfony/Component/Mailer/Tests/Transport/Smtp/EsmtpTransportFactoryTest.php b/src/Symfony/Component/Mailer/Tests/Transport/Smtp/EsmtpTransportFactoryTest.php
index c2868ccbd8e99..c401ba4241941 100644
--- a/src/Symfony/Component/Mailer/Tests/Transport/Smtp/EsmtpTransportFactoryTest.php
+++ b/src/Symfony/Component/Mailer/Tests/Transport/Smtp/EsmtpTransportFactoryTest.php
@@ -157,5 +157,12 @@ public static function createProvider(): iterable
             new Dsn('smtps', 'example.com', '', '', 465, ['ping_threshold' => '10']),
             $transport,
         ];
+
+        $transport = new EsmtpTransport('example.com', 465, false, null, $logger);
+
+        yield [
+            new Dsn('smtp', 'example.com', '', '', 465),
+            $transport,
+        ];
     }
 }
diff --git a/src/Symfony/Component/Mailer/Transport/Smtp/EsmtpTransportFactory.php b/src/Symfony/Component/Mailer/Transport/Smtp/EsmtpTransportFactory.php
index a15d12245d19b..7c177524554d1 100644
--- a/src/Symfony/Component/Mailer/Transport/Smtp/EsmtpTransportFactory.php
+++ b/src/Symfony/Component/Mailer/Transport/Smtp/EsmtpTransportFactory.php
@@ -23,7 +23,7 @@ final class EsmtpTransportFactory extends AbstractTransportFactory
 {
     public function create(Dsn $dsn): TransportInterface
     {
-        $tls = 'smtps' === $dsn->getScheme() ? true : null;
+        $tls = 'smtps' === $dsn->getScheme();
         $port = $dsn->getPort(0);
         $host = $dsn->getHost();