diff --git a/Tests/PhpUnit/ContainerBuilderHasServiceDefinitionConstraintTest.php b/Tests/PhpUnit/ContainerBuilderHasServiceDefinitionConstraintTest.php
index 9aedfc2..911cae7 100644
--- a/Tests/PhpUnit/ContainerBuilderHasServiceDefinitionConstraintTest.php
+++ b/Tests/PhpUnit/ContainerBuilderHasServiceDefinitionConstraintTest.php
@@ -1,6 +1,6 @@
 <?php
 
-namespace Matthias\SymfonyDependencyInjectionTest\Tests\PhpUnit\DependencyInjection;
+namespace Matthias\SymfonyDependencyInjectionTest\Tests\PhpUnit;
 
 use Matthias\SymfonyDependencyInjectionTest\PhpUnit\ContainerBuilderHasServiceDefinitionConstraint;
 use PHPUnit\Framework\TestCase;
@@ -14,11 +14,11 @@ class ContainerBuilderHasServiceDefinitionConstraintTest extends TestCase
      * @dataProvider containerBuilderProvider
      */
     public function match(
-      ContainerBuilder $containerBuilder,
-      $serviceId,
-      $expectedClass,
-      $checkExpectedClass,
-      $shouldMatch
+        ContainerBuilder $containerBuilder,
+        $serviceId,
+        $expectedClass,
+        $checkExpectedClass,
+        $shouldMatch
     ): void {
         $constraint = new ContainerBuilderHasServiceDefinitionConstraint($serviceId, $expectedClass, $checkExpectedClass);
 
diff --git a/Tests/PhpUnit/ContainerBuilderHasSyntheticServiceConstraintTest.php b/Tests/PhpUnit/ContainerBuilderHasSyntheticServiceConstraintTest.php
index bc48bcb..39d332c 100644
--- a/Tests/PhpUnit/ContainerBuilderHasSyntheticServiceConstraintTest.php
+++ b/Tests/PhpUnit/ContainerBuilderHasSyntheticServiceConstraintTest.php
@@ -1,6 +1,6 @@
 <?php
 
-namespace Matthias\SymfonyDependencyInjectionTest\Tests\PhpUnit\DependencyInjection;
+namespace Matthias\SymfonyDependencyInjectionTest\Tests\PhpUnit;
 
 use Matthias\SymfonyDependencyInjectionTest\PhpUnit\ContainerBuilderHasSyntheticServiceConstraint;
 use PHPUnit\Framework\Constraint\Constraint;
diff --git a/Tests/PhpUnit/ContainerHasParameterConstraintTest.php b/Tests/PhpUnit/ContainerHasParameterConstraintTest.php
index 1f64594..e0c353f 100644
--- a/Tests/PhpUnit/ContainerHasParameterConstraintTest.php
+++ b/Tests/PhpUnit/ContainerHasParameterConstraintTest.php
@@ -1,6 +1,6 @@
 <?php
 
-namespace Matthias\SymfonyDependencyInjectionTest\Tests\PhpUnit\DependencyInjection;
+namespace Matthias\SymfonyDependencyInjectionTest\Tests\PhpUnit;
 
 use Matthias\SymfonyDependencyInjectionTest\PhpUnit\ContainerHasParameterConstraint;
 use PHPUnit\Framework\TestCase;
@@ -13,11 +13,11 @@ class ContainerHasParameterConstraintTest extends TestCase
      * @dataProvider containerBuilderProvider
      */
     public function match(
-      ContainerInterface $container,
-      $parameterName,
-      $parameterValue,
-      $checkParameterValue,
-      $expectedToMatch
+        ContainerInterface $container,
+        $parameterName,
+        $parameterValue,
+        $checkParameterValue,
+        $expectedToMatch
     ): void {
         $constraint = new ContainerHasParameterConstraint($parameterName, $parameterValue, $checkParameterValue);
 
diff --git a/Tests/PhpUnit/DefinitionHasArgumentConstraintTest.php b/Tests/PhpUnit/DefinitionHasArgumentConstraintTest.php
index 4be8fe7..0e6ae76 100644
--- a/Tests/PhpUnit/DefinitionHasArgumentConstraintTest.php
+++ b/Tests/PhpUnit/DefinitionHasArgumentConstraintTest.php
@@ -1,6 +1,6 @@
 <?php
 
-namespace Matthias\SymfonyDependencyInjectionTest\Tests\PhpUnit\DependencyInjection;
+namespace Matthias\SymfonyDependencyInjectionTest\Tests\PhpUnit;
 
 use Matthias\SymfonyDependencyInjectionTest\PhpUnit\DefinitionHasArgumentConstraint;
 use PHPUnit\Framework\ExpectationFailedException;
@@ -121,7 +121,9 @@ public function supports_indexed_arguments($argumentIndex): void
             self::assertStringStartsWith(
                 sprintf(
                     'The value of argument with index %d (\'%s\') is not equal to the expected value (\'%s\')',
-                    $argumentIndex, $expectedValue, $failingExpectation
+                    $argumentIndex,
+                    $expectedValue,
+                    $failingExpectation
                 ),
                 $e->getMessage()
             );
@@ -167,7 +169,9 @@ public function supports_named_arguments($argument): void
             self::assertStringStartsWith(
                 sprintf(
                     'The value of argument named "%s" (\'%s\') is not equal to the expected value (\'%s\')',
-                    $argument, $expectedValue, $failingExpectation
+                    $argument,
+                    $expectedValue,
+                    $failingExpectation
                 ),
                 $e->getMessage()
             );
diff --git a/Tests/PhpUnit/DefinitionHasMethodCallConstraintTest.php b/Tests/PhpUnit/DefinitionHasMethodCallConstraintTest.php
index c84b20c..a109ca8 100644
--- a/Tests/PhpUnit/DefinitionHasMethodCallConstraintTest.php
+++ b/Tests/PhpUnit/DefinitionHasMethodCallConstraintTest.php
@@ -1,6 +1,6 @@
 <?php
 
-namespace Matthias\SymfonyDependencyInjectionTest\Tests\PhpUnit\DependencyInjection;
+namespace Matthias\SymfonyDependencyInjectionTest\Tests\PhpUnit;
 
 use Matthias\SymfonyDependencyInjectionTest\PhpUnit\DefinitionHasMethodCallConstraint;
 use PHPUnit\Framework\TestCase;
diff --git a/Tests/PhpUnit/DefinitionHasTagConstraintTest.php b/Tests/PhpUnit/DefinitionHasTagConstraintTest.php
index 6c0829c..4765320 100644
--- a/Tests/PhpUnit/DefinitionHasTagConstraintTest.php
+++ b/Tests/PhpUnit/DefinitionHasTagConstraintTest.php
@@ -1,6 +1,6 @@
 <?php
 
-namespace Matthias\SymfonyDependencyInjectionTest\Tests\PhpUnit\DependencyInjection;
+namespace Matthias\SymfonyDependencyInjectionTest\Tests\PhpUnit;
 
 use Matthias\SymfonyDependencyInjectionTest\PhpUnit\DefinitionHasTagConstraint;
 use PHPUnit\Framework\ExpectationFailedException;
diff --git a/Tests/PhpUnit/DefinitionIsChildOfConstraintTest.php b/Tests/PhpUnit/DefinitionIsChildOfConstraintTest.php
index 64c0c45..43355b7 100644
--- a/Tests/PhpUnit/DefinitionIsChildOfConstraintTest.php
+++ b/Tests/PhpUnit/DefinitionIsChildOfConstraintTest.php
@@ -1,6 +1,6 @@
 <?php
 
-namespace Matthias\DependencyInjectionTests\Test\DependencyInjection;
+namespace Matthias\SymfonyDependencyInjectionTest\Tests\PhpUnit;
 
 use Matthias\SymfonyDependencyInjectionTest\PhpUnit\DefinitionIsChildOfConstraint;
 use PHPUnit\Framework\TestCase;