diff --git a/build/generate-registry-annotations.php b/build/generate-registry-annotations.php
index 946f62605..1198db207 100644
--- a/build/generate-registry-annotations.php
+++ b/build/generate-registry-annotations.php
@@ -29,7 +29,9 @@ use function count;
 use function dirname;
 use function file_get_contents;
 use function file_put_contents;
+use function fwrite;
 use function implode;
+use function is_dir;
 use function ksort;
 use function mb_strtoupper;
 use function preg_match;