diff --git a/build/build-preload.php b/build/build-preload.php
index d12919768a9..8129619832f 100755
--- a/build/build-preload.php
+++ b/build/build-preload.php
@@ -51,6 +51,10 @@ final class PreloadBuilder
 
 declare(strict_types=1);
 
+if (defined('__PHPSTAN_RUNNING__')) {
+    return;
+}
+
 
 CODE_SAMPLE;
 
diff --git a/preload-split-package.php b/preload-split-package.php
index f9f3527c37c..d2936f3bec3 100644
--- a/preload-split-package.php
+++ b/preload-split-package.php
@@ -2,6 +2,10 @@
 
 declare(strict_types=1);
 
+if (defined('__PHPSTAN_RUNNING__')) {
+    return;
+}
+
 require_once __DIR__ . '/../../../vendor/nikic/php-parser/lib/PhpParser/Node.php';
 require_once __DIR__ . '/src/Contract/PhpParser/Node/StmtsAwareInterface.php';
 require_once __DIR__ . '/../../../vendor/nikic/php-parser/lib/PhpParser/NodeAbstract.php';
diff --git a/preload.php b/preload.php
index 7068cc5b820..792b74681ed 100644
--- a/preload.php
+++ b/preload.php
@@ -2,6 +2,10 @@
 
 declare(strict_types=1);
 
+if (defined('__PHPSTAN_RUNNING__')) {
+    return;
+}
+
 require_once __DIR__ . '/vendor/nikic/php-parser/lib/PhpParser/Node.php';
 require_once __DIR__ . '/src/Contract/PhpParser/Node/StmtsAwareInterface.php';
 require_once __DIR__ . '/vendor/nikic/php-parser/lib/PhpParser/NodeAbstract.php';