diff --git a/Controller/YamlDocumentationController.php b/Controller/YamlDocumentationController.php
index 62be3ad..7557fc8 100644
--- a/Controller/YamlDocumentationController.php
+++ b/Controller/YamlDocumentationController.php
@@ -17,7 +17,6 @@ use Psr\Container\ContainerInterface;
 use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\HttpFoundation\Response;
 use Symfony\Component\HttpKernel\Exception\BadRequestHttpException;
-use Symfony\Component\Yaml\Yaml;
 
 final class YamlDocumentationController
 {
@@ -42,7 +41,7 @@ final class YamlDocumentationController
         }
 
         return new Response($spec->toYaml(), 200, [
-            'Content-Type' => 'text/x-yaml'
+            'Content-Type' => 'text/x-yaml',
         ]);
     }
 }
diff --git a/Tests/Functional/SwaggerUiTest.php b/Tests/Functional/SwaggerUiTest.php
index ddc9129..01dc4a0 100644
--- a/Tests/Functional/SwaggerUiTest.php
+++ b/Tests/Functional/SwaggerUiTest.php
@@ -13,7 +13,6 @@ namespace Nelmio\ApiDocBundle\Tests\Functional;
 
 use OpenApi\Annotations\Server;
 use Symfony\Bundle\FrameworkBundle\KernelBrowser;
-use Symfony\Component\Yaml\Yaml;
 
 class SwaggerUiTest extends WebTestCase
 {