diff --git a/app/Actions/FixCode.php b/app/Actions/FixCode.php
index 7661ba73..d1940360 100644
--- a/app/Actions/FixCode.php
+++ b/app/Actions/FixCode.php
@@ -5,6 +5,7 @@
 use App\Factories\ConfigurationResolverFactory;
 use LaravelZero\Framework\Exceptions\ConsoleException;
 use PhpCsFixer\Console\ConfigurationResolver;
+use PhpCsFixer\Differ\NullDiffer;
 use PhpCsFixer\Runner\Runner;
 use Symfony\Component\Console\Input\InputInterface;
 use Symfony\Component\Console\Input\InputOption;
@@ -89,6 +90,8 @@ private function getInput(ConfigurationResolver $resolver): InputInterface
         $this->input->setOption('rules', json_encode($resolver->getRules()));
         $this->input->setOption('using-cache', $resolver->getUsingCache() ? 'yes' : 'no');
 
+        $this->input->setOption('diff', ! $resolver->getDiffer() instanceof NullDiffer);
+
         return $this->input;
     }
 }