diff --git a/build/files-checker.php b/build/files-checker.php
index 08d9acf2fd8..85b35ca7a71 100644
--- a/build/files-checker.php
+++ b/build/files-checker.php
@@ -92,6 +92,7 @@ $expectedFiles = [
 	'webpack.common.js',
 	'webpack.config.js',
 	'webpack.modules.js',
+	'window.d.ts',
 ];
 $actualFiles = [];