diff --git a/IT_asset_management/app/templates/maintenance/index.html b/IT_asset_management/app/templates/maintenance/index.html
index 0adf3e7..d673dcb 100644
--- a/IT_asset_management/app/templates/maintenance/index.html
+++ b/IT_asset_management/app/templates/maintenance/index.html
@@ -261,8 +261,9 @@ const form       = document.getElementById('maintenanceForm');
 const titleText  = document.getElementById('modalTitleText');
 const submitText = document.getElementById('submitBtnText');
 
-const createUrl = "{{ url_for('maintenance.create') }}";
-const updateUrl = (id) => `/maintenance/${id}/update`;
+const createUrl  = "{{ url_for('maintenance.create') }}";
+const _updateBase = "{{ url_for('maintenance.update', record_id=0) }}";
+const updateUrl  = (id) => _updateBase.replace('/0/', `/${id}/`);
 
 // ── Open for EDIT when a table row is clicked ────────────────────────────────
 document.querySelectorAll('tr[data-id]').forEach(row => {