diff --git a/wtm-frontend-react/src/modules/timesheet/timesheet.service.ts b/wtm-frontend-react/src/modules/timesheet/timesheet.service.ts
index 5840f13..4e17692 100644
--- a/wtm-frontend-react/src/modules/timesheet/timesheet.service.ts
+++ b/wtm-frontend-react/src/modules/timesheet/timesheet.service.ts
@@ -5,7 +5,7 @@ const BASE = '/api/wtm/timesheets';
 export const timesheetService = {
   getWeekly: (weekStart: string) => api.get(`${BASE}/week`, { params: { weekStart } }),
   saveEntry: (tsId: number, entry: unknown) => api.post(`${BASE}/${tsId}/entries`, entry),
-  saveBatch: (tsId: number, entries: unknown[]) => api.put(`${BASE}/${tsId}/entries/batch`, { entries }),
+  saveBatch: (tsId: number, entries: unknown[]) => api.put(`${BASE}/${tsId}/entries/batch`, entries),
   deleteEntry: (tsId: number, entryId: number) => api.delete(`${BASE}/${tsId}/entries/${entryId}`),
   submit: (tsId: number) => api.post(`${BASE}/${tsId}/submit`),
   getHistory: (params: Record<string, unknown>) => api.get(`${BASE}/history`, { params }),