diff --git a/compiler/src/Console/CompileCommand.php b/compiler/src/Console/CompileCommand.php
index b988135557..e3546c4082 100644
--- a/compiler/src/Console/CompileCommand.php
+++ b/compiler/src/Console/CompileCommand.php
@@ -162,6 +162,7 @@ private function buildPreloadScript(): void
 		}
 		$output = '';
 		foreach ($finder->files()->name('*.php')->in([
+			$this->buildDir . '/src',
 			$vendorDir . '/nikic/php-parser/lib/PhpParser',
 			$vendorDir . '/phpstan/phpdoc-parser/src',
 		]) as $phpFile) {