diff --git a/src/compile/index.ts b/src/compile/index.ts
index e80a937932..7533b891e7 100644
--- a/src/compile/index.ts
+++ b/src/compile/index.ts
@@ -21,6 +21,7 @@ const valid_options = [
 	'hydratable',
 	'legacy',
 	'customElement',
+	'shadowDom',
 	'tag',
 	'css',
 	'preserveComments',