diff --git a/extra/twig-extra-bundle/Tests/IntegrationTest.php b/extra/twig-extra-bundle/Tests/IntegrationTest.php
index 3d22851c5..c5b420ebe 100644
--- a/extra/twig-extra-bundle/Tests/IntegrationTest.php
+++ b/extra/twig-extra-bundle/Tests/IntegrationTest.php
@@ -19,8 +19,7 @@ class IntegrationTest extends KernelTestCase
     {
         self::bootKernel();
 
-        $container = method_exists(self::class, 'getContainer') ? self::getContainer() : self::$container;
-        $rendered = $container->get('twig')->render('markdown_to_html.html.twig');
+        $rendered = self::getContainer()->get('twig')->render('markdown_to_html.html.twig');
 
         $this->assertStringContainsString('<h1>Hello <del>World</del></h1>', $rendered);
     }