diff --git a/src/Symfony/Bundle/SecurityBundle/DependencyInjection/MainConfiguration.php b/src/Symfony/Bundle/SecurityBundle/DependencyInjection/MainConfiguration.php
index 9248484a2aa39..e7dbdd42a7868 100644
--- a/src/Symfony/Bundle/SecurityBundle/DependencyInjection/MainConfiguration.php
+++ b/src/Symfony/Bundle/SecurityBundle/DependencyInjection/MainConfiguration.php
@@ -65,7 +65,7 @@ public function getConfigTreeBuilder(): TreeBuilder
                 ->end()
                 ->booleanNode('hide_user_not_found')->defaultTrue()->end()
                 ->booleanNode('erase_credentials')->defaultTrue()->end()
-                ->booleanNode('enable_authenticator_manager')->defaultFalse()->info('Enables the new Symfony Security system based on Authenticators, all used authenticators must support this before enabling this.')->end()
+                ->booleanNode('enable_authenticator_manager')->defaultTrue()->end()
                 ->arrayNode('access_decision_manager')
                     ->addDefaultsIfNotSet()
                     ->children()