diff --git a/packages/backend/src/server/web/url-preview.ts b/packages/backend/src/server/web/url-preview.ts
index 592e6bad549bbbff09938a7b9d80f85d0afc3969..6bd8ead5b5e7336fae2dfcfa9142007d296cc028 100644
--- a/packages/backend/src/server/web/url-preview.ts
+++ b/packages/backend/src/server/web/url-preview.ts
@@ -31,7 +31,7 @@ export const urlPreviewHandler = async (ctx: Koa.Context) => {
 		const summary = meta.summalyProxy ? await getJson(`${meta.summalyProxy}?${query({
 			url: url,
 			lang: lang ?? 'ja-JP',
-		})}`) : await summaly(url, {
+		})}`) : await summaly.default(url, {
 			followRedirects: false,
 			lang: lang ?? 'ja-JP',
 		});