diff --git a/src/Command/DumpEnvCommand.php b/src/Command/DumpEnvCommand.php
index d0a90bec9..ea2bde370 100644
--- a/src/Command/DumpEnvCommand.php
+++ b/src/Command/DumpEnvCommand.php
@@ -71,7 +71,7 @@ protected function execute(InputInterface $input, OutputInterface $output): int
 return $vars;
 
 EOF;
-        file_put_contents($path.'.local.php', $vars, LOCK_EX);
+        file_put_contents($path.'.local.php', $vars, \LOCK_EX);
 
         $this->getIO()->writeError('Successfully dumped .env files in <info>.env.local.php</>');
 
@@ -84,6 +84,8 @@ private function loadEnv(string $path, ?string $env): array
             throw new \RuntimeException(sprintf('Please run "composer install" before running this command: "%s" not found.', $autoloadFile));
         }
 
+        require $autoloadFile;
+
         if (!class_exists(Dotenv::class)) {
             throw new \RuntimeException('Please run "composer require symfony/dotenv" to load the ".env" files configuring the application.');
         }