diff --git a/packages/vite/src/node/plugins/html.ts b/packages/vite/src/node/plugins/html.ts
index 8e34cdb15ac93b..0a10d8c8fe387e 100644
--- a/packages/vite/src/node/plugins/html.ts
+++ b/packages/vite/src/node/plugins/html.ts
@@ -302,7 +302,7 @@ function handleParseError(
// Accept elements without closing tag in
return
case 'duplicate-attribute':
- // Accept duplicate attributes #9566
+ // Accept duplicate attributes #5966
// The first attribute is used, browsers silently ignore duplicates
return
case 'non-void-html-element-start-tag-with-trailing-solidus':