diff --git a/phpstan-bootstrap.php b/phpstan-bootstrap.php
deleted file mode 100644
index a9589cc9..00000000
--- a/phpstan-bootstrap.php
+++ /dev/null
@@ -1,15 +0,0 @@
-<?php
-/**
- * This file is part of TypePHP(AOT).
- *
- * @link     https://www.swoole.com/aot/
- * @contact  service@swoole.com
- */
-
-if (!defined('TYPEPHP_ROOT_PATH')) {
-    define('TYPEPHP_ROOT_PATH', __DIR__);
-}
-
-if (!defined('TYPEPHP_DEBUG')) {
-    define('TYPEPHP_DEBUG', true);
-}
diff --git a/phpstan.neon b/phpstan.neon
index 6ad179d2..df1dbe87 100644
--- a/phpstan.neon
+++ b/phpstan.neon
@@ -5,10 +5,9 @@ parameters:
     - src
     - bin
 
-  # Define CLI constants without executing bin/bootstrap.php inside PHPStan's
-  # process, where loading Composer's autoloader a second time is unsafe.
+  # Reuse the same constants and Composer autoloader setup as the CLI tools.
   bootstrapFiles:
-    - phpstan-bootstrap.php
+    - bin/bootstrap.php
 
   # gen_stub.php is maintained as a namespaced copy of php-src's generator.
   # Analyze TypePHP-owned compiler code independently from upstream diagnostics.