diff --git a/src/Command/FixerApplication.php b/src/Command/FixerApplication.php
index 698b24d7e..ff9031dac 100644
--- a/src/Command/FixerApplication.php
+++ b/src/Command/FixerApplication.php
@@ -313,7 +313,7 @@ private function getFixerProcess(OutputInterface $output, int $serverPort): Proc
 			throw new \PHPStan\Command\FixerProcessException();
 		}
 
-		$env = null;
+		$env = getenv();
 		$forcedPort = $_SERVER['PHPSTAN_PRO_WEB_PORT'] ?? null;
 		if ($forcedPort !== null) {
 			$env['PHPSTAN_PRO_WEB_PORT'] = $_SERVER['PHPSTAN_PRO_WEB_PORT'];