diff --git a/apps/api/src/modules/orders/index.ts b/apps/api/src/modules/orders/index.ts
index 22d35b8..978ad80 100644
--- a/apps/api/src/modules/orders/index.ts
+++ b/apps/api/src/modules/orders/index.ts
@@ -243,15 +243,15 @@ export const ordersModule: KcModule = {
         } catch (e) { if (e instanceof RangeError) throw badRequest(e.message); throw e; }
         const renewal = b.renewal ?? k.renewal; const renewalTermMonths = b.renewalTermMonths ?? Number(k.renewal_term_months); const noticeDays = b.noticeDays ?? Number(k.notice_days);
         if (renewal === 'auto' && renewalTermMonths < 1) throw badRequest('Bei automatischer Verlängerung muss die Verlängerungsdauer mindestens 1 Monat sein');
-        const termEnd = b.termEnd === undefined ? k.term_end : b.termEnd === null ? null : new Date(`${b.termEnd}T00:00:00`);
+        const termEnd = b.termEnd === undefined ? k.term_end : b.termEnd === null ? null : new Date(`${b.termEnd}T00:00:00Z`);
         const next = { ...snap, ...price, terms: { ...(snap.terms ?? {}), renewal, renewalTermMonths, noticeDays }, adjusted: { at: new Date().toISOString(), by: a.user.id, reason: b.reason } };
         // Neues Laufzeitende = neue Erinnerung fällig
         const termChanged = b.termEnd !== undefined && String(termEnd ?? '') !== String(k.term_end ?? '');
         await run(`UPDATE contracts SET price_snapshot_json = ?, term_end = ?, renewal = ?, renewal_term_months = ?, notice_days = ?${termChanged ? ', renewal_reminder_sent_at = NULL' : ''} WHERE id = ?`,
           [JSON.stringify(next), termEnd, renewal, renewalTermMonths, noticeDays, id], c);
         await audit({ actorType: 'user', actorId: a.user.id, orgId: k.org_id, action: 'contract.adjust', resourceType: 'contract', resourceId: id, correlationId: req.correlationId, ip: clientIp(req),
-          before: { recurring: snap.recurring, setup: snap.setup, basis: snap.basis, interval: snap.interval, discountBp: snap.discountBp, termEnd: k.term_end, renewal: k.renewal, renewalTermMonths: k.renewal_term_months, noticeDays: k.notice_days },
-          after: { recurring: price.recurring, setup: price.setup, basis: price.basis, interval: price.interval, discountBp: price.discountBp, termEnd, renewal, renewalTermMonths, noticeDays, reason: b.reason } }, c);
+          before: { recurring: snap.recurring, setup: snap.setup, basis: snap.basis, interval: snap.interval, discountBp: snap.discountBp, termEnd: k.term_end ? new Date(k.term_end).toISOString() : null, renewal: k.renewal, renewalTermMonths: k.renewal_term_months, noticeDays: k.notice_days },
+          after: { recurring: price.recurring, setup: price.setup, basis: price.basis, interval: price.interval, discountBp: price.discountBp, termEnd: termEnd ? new Date(termEnd).toISOString() : null, renewal, renewalTermMonths, noticeDays, reason: b.reason } }, c);
         return { ok: true };
       });
     });