diff --git a/src/config/external-services.yml b/src/config/external-services.yml
index 86f24de0c10..eb37165e179 100644
--- a/src/config/external-services.yml
+++ b/src/config/external-services.yml
@@ -33,5 +33,3 @@ services:
         alias: Symfony\Component\Console\Output\ConsoleOutput
 
     Symplify\PackageBuilder\Parameter\ParameterProvider: ~
-
-#    PhpCsFixer\Differ\UnifiedDiffer: ~