diff --git a/packages/backend/src/server/web/views/flash.pug b/packages/backend/src/server/web/views/flash.pug
index dc529b21df..5166855ea2 100644
--- a/packages/backend/src/server/web/views/flash.pug
+++ b/packages/backend/src/server/web/views/flash.pug
@@ -24,7 +24,7 @@ block meta
 
 	meta(name='misskey:user-username' content=user.username)
 	meta(name='misskey:user-id' content=user.id)
-	meta(name='misskey:page-id' content=page.id)
+	meta(name='misskey:flash-id' content=flash.id)
 
 	// todo
 	if user.twitter