diff --git a/src/Symfony/Component/Notifier/Bridge/AllMySms/Tests/AllMySmsTransportTest.php b/src/Symfony/Component/Notifier/Bridge/AllMySms/Tests/AllMySmsTransportTest.php
index abab836661..5923e48767 100644
--- a/src/Symfony/Component/Notifier/Bridge/AllMySms/Tests/AllMySmsTransportTest.php
+++ b/src/Symfony/Component/Notifier/Bridge/AllMySms/Tests/AllMySmsTransportTest.php
@@ -26,7 +26,7 @@ final class AllMySmsTransportTest extends TransportTestCase
      */
     public function createTransport(?HttpClientInterface $client = null, string $from = null): TransportInterface
     {
-        return new AllMySmsTransport('login', 'apiKey', $from, $client ?: $this->createMock(HttpClientInterface::class));
+        return new AllMySmsTransport('login', 'apiKey', $from, $client ?? $this->createMock(HttpClientInterface::class));
     }
 
     public function toStringProvider(): iterable
diff --git a/src/Symfony/Component/Notifier/Bridge/GatewayApi/Tests/GatewayApiTransportTest.php b/src/Symfony/Component/Notifier/Bridge/GatewayApi/Tests/GatewayApiTransportTest.php
index 9acb2a6a3d..bdb3bfe4b6 100644
--- a/src/Symfony/Component/Notifier/Bridge/GatewayApi/Tests/GatewayApiTransportTest.php
+++ b/src/Symfony/Component/Notifier/Bridge/GatewayApi/Tests/GatewayApiTransportTest.php
@@ -24,7 +24,7 @@ final class GatewayApiTransportTest extends TransportTestCase
      */
     public function createTransport(?HttpClientInterface $client = null): TransportInterface
     {
-        return new GatewayApiTransport('authtoken', 'Symfony', $client ?: $this->createMock(HttpClientInterface::class));
+        return new GatewayApiTransport('authtoken', 'Symfony', $client ?? $this->createMock(HttpClientInterface::class));
     }
 
     public function toStringProvider(): iterable
diff --git a/src/Symfony/Component/Notifier/Bridge/Gitter/Tests/GitterTransportTest.php b/src/Symfony/Component/Notifier/Bridge/Gitter/Tests/GitterTransportTest.php
index 72f5455477..5fc0a0e263 100644
--- a/src/Symfony/Component/Notifier/Bridge/Gitter/Tests/GitterTransportTest.php
+++ b/src/Symfony/Component/Notifier/Bridge/Gitter/Tests/GitterTransportTest.php
@@ -26,7 +26,7 @@ final class GitterTransportTest extends TransportTestCase
 {
     public function createTransport(?HttpClientInterface $client = null): TransportInterface
     {
-        return (new GitterTransport('token', '5539a3ee5etest0d3255bfef', $client ?: $this->createMock(HttpClientInterface::class)))->setHost('api.gitter.im');
+        return (new GitterTransport('token', '5539a3ee5etest0d3255bfef', $client ?? $this->createMock(HttpClientInterface::class)))->setHost('api.gitter.im');
     }
 
     public function toStringProvider(): iterable
diff --git a/src/Symfony/Component/Notifier/Bridge/Iqsms/Tests/IqsmsTransportTest.php b/src/Symfony/Component/Notifier/Bridge/Iqsms/Tests/IqsmsTransportTest.php
index e2db3b139e..82df50d84c 100644
--- a/src/Symfony/Component/Notifier/Bridge/Iqsms/Tests/IqsmsTransportTest.php
+++ b/src/Symfony/Component/Notifier/Bridge/Iqsms/Tests/IqsmsTransportTest.php
@@ -26,7 +26,7 @@ final class IqsmsTransportTest extends TransportTestCase
      */
     public function createTransport(?HttpClientInterface $client = null): TransportInterface
     {
-        return new IqsmsTransport('login', 'password', 'sender', $client ?: $this->createMock(HttpClientInterface::class));
+        return new IqsmsTransport('login', 'password', 'sender', $client ?? $this->createMock(HttpClientInterface::class));
     }
 
     public function toStringProvider(): iterable
diff --git a/src/Symfony/Component/Notifier/Bridge/LightSms/Tests/LightSmsTransportTest.php b/src/Symfony/Component/Notifier/Bridge/LightSms/Tests/LightSmsTransportTest.php
index 86230a9eb8..9fd4df8976 100644
--- a/src/Symfony/Component/Notifier/Bridge/LightSms/Tests/LightSmsTransportTest.php
+++ b/src/Symfony/Component/Notifier/Bridge/LightSms/Tests/LightSmsTransportTest.php
@@ -26,7 +26,7 @@ final class LightSmsTransportTest extends TransportTestCase
      */
     public function createTransport(?HttpClientInterface $client = null): TransportInterface
     {
-        return new LightSmsTransport('accountSid', 'authToken', 'from', $client ?: $this->createMock(HttpClientInterface::class));
+        return new LightSmsTransport('accountSid', 'authToken', 'from', $client ?? $this->createMock(HttpClientInterface::class));
     }
 
     public function toStringProvider(): iterable
diff --git a/src/Symfony/Component/Notifier/Bridge/Octopush/Tests/OctopushTransportTest.php b/src/Symfony/Component/Notifier/Bridge/Octopush/Tests/OctopushTransportTest.php
index c94af87e0c..8cbcb8ab41 100644
--- a/src/Symfony/Component/Notifier/Bridge/Octopush/Tests/OctopushTransportTest.php
+++ b/src/Symfony/Component/Notifier/Bridge/Octopush/Tests/OctopushTransportTest.php
@@ -26,7 +26,7 @@ final class OctopushTransportTest extends TransportTestCase
      */
     public function createTransport(?HttpClientInterface $client = null): TransportInterface
     {
-        return new OctopushTransport('userLogin', 'apiKey', 'from', 'type', $client ?: $this->createMock(HttpClientInterface::class));
+        return new OctopushTransport('userLogin', 'apiKey', 'from', 'type', $client ?? $this->createMock(HttpClientInterface::class));
     }
 
     public function toStringProvider(): iterable
diff --git a/src/Symfony/Component/Notifier/Bridge/SpotHit/Tests/SpotHitTransportTest.php b/src/Symfony/Component/Notifier/Bridge/SpotHit/Tests/SpotHitTransportTest.php
index 1884cc427b..b50c8cdfdc 100644
--- a/src/Symfony/Component/Notifier/Bridge/SpotHit/Tests/SpotHitTransportTest.php
+++ b/src/Symfony/Component/Notifier/Bridge/SpotHit/Tests/SpotHitTransportTest.php
@@ -26,7 +26,7 @@ final class SpotHitTransportTest extends TransportTestCase
      */
     public function createTransport(?HttpClientInterface $client = null): TransportInterface
     {
-        return (new SpotHitTransport('api_token', 'MyCompany', $client ?: $this->createMock(HttpClientInterface::class)))->setHost('host.test');
+        return (new SpotHitTransport('api_token', 'MyCompany', $client ?? $this->createMock(HttpClientInterface::class)))->setHost('host.test');
     }
 
     public function toStringProvider(): iterable