diff --git a/src/parse/state/tag.ts b/src/parse/state/tag.ts
index 9ca4d8f5dd..f62ac527bf 100644
--- a/src/parse/state/tag.ts
+++ b/src/parse/state/tag.ts
@@ -17,7 +17,7 @@ const metaTags = new Map([
 	['svelte:body', 'Body']
 ]);
 
-const valid_meta_tags = [Array.from(metaTags.keys()), 'svelte:self', 'svelte:component'];
+const valid_meta_tags = Array.from(metaTags.keys()).concat('svelte:self', 'svelte:component');
 
 const specials = new Map([
 	[