diff --git a/server/billing.mjs b/server/billing.mjs
index 645fe91..2e4d07a 100644
--- a/server/billing.mjs
+++ b/server/billing.mjs
@@ -228,8 +228,11 @@ export async function cancelSubscription({ subId, neden, aciklama }) {
   });
   const data = await res.json().catch(() => ({}));
   if (!res.ok) throw new Error(data?.error?.message || `Stripe hatası: HTTP ${res.status}`);
+  if (typeof data.id !== 'string' || !data.id.trim() || typeof data.status !== 'string' || !data.status.trim())
+    throw new Error('Stripe abonelik iptal yanıtı geçersiz.');
   return {
     id: data.id,
+    status: data.status,
     donemSonunda: Boolean(data.cancel_at_period_end),
     bitis: data.cancel_at ? new Date(data.cancel_at * 1000).toISOString() : null,
   };