diff --git a/src/Symfony/Bridge/PhpUnit/bin/simple-phpunit b/src/Symfony/Bridge/PhpUnit/bin/simple-phpunit
index 2e23aa890054..85479fd28d35 100755
--- a/src/Symfony/Bridge/PhpUnit/bin/simple-phpunit
+++ b/src/Symfony/Bridge/PhpUnit/bin/simple-phpunit
@@ -90,6 +90,18 @@ if (!file_exists("$PHPUNIT_DIR/phpunit-$PHPUNIT_VERSION/phpunit") || md5_file(__
     if ($exit) {
         exit($exit);
     }
+    // Fix compatibility to custom TestRunner for PhpUnit 8 compatibility
+    if ($PHPUNIT_VERSION >= 8.0) {
+        $testRunnerFile = 'src/TextUI/TestRunner.php';
+        file_put_contents(
+            $testRunnerFile,
+            str_replace(
+                'final class TestRunner',
+                'class TestRunner',
+                file_get_contents($testRunnerFile)
+            )
+        );
+    }
     file_put_contents('phpunit', <<<'EOPHP'
 <?php