diff --git a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/FrameworkExtension.php b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/FrameworkExtension.php
index f585b5bbb784..68386120e06b 100644
--- a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/FrameworkExtension.php
+++ b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/FrameworkExtension.php
@@ -735,7 +735,7 @@ static function (ChildDefinition $definition, AsPeriodicTask|AsCronTask $attribu
             $container->getDefinition('config_cache_factory')->setArguments([]);
         }
 
-        if (!$config['disallow_search_engine_index'] ?? false) {
+        if (!$config['disallow_search_engine_index']) {
             $container->removeDefinition('disallow_search_engine_index_response_listener');
         }