diff --git a/DependencyInjection/DebugExtension.php b/DependencyInjection/DebugExtension.php
index eadeafb..726b181 100644
--- a/DependencyInjection/DebugExtension.php
+++ b/DependencyInjection/DebugExtension.php
@@ -14,6 +14,7 @@
 use Symfony\Bridge\Monolog\Command\ServerLogCommand;
 use Symfony\Bundle\DebugBundle\Command\ServerDumpPlaceholderCommand;
 use Symfony\Component\Config\FileLocator;
+use Symfony\Component\Console\Command\Command;
 use Symfony\Component\DependencyInjection\ContainerBuilder;
 use Symfony\Component\DependencyInjection\Extension\Extension;
 use Symfony\Component\DependencyInjection\Loader\PhpFileLoader;
@@ -92,7 +93,7 @@ public function load(array $configs, ContainerBuilder $container)
             ;
         }
 
-        if (!class_exists(ServerLogCommand::class)) {
+        if (!class_exists(Command::class) || !class_exists(ServerLogCommand::class)) {
             $container->removeDefinition('monolog.command.server_log');
         }
     }