diff --git a/src/service/work_order.go b/src/service/work_order.go
index 205a55c31eb6eb8f299519c4c921def2311908bd..9d8abf0134fe77e49b9be0da50c40a2612b81b03 100644
--- a/src/service/work_order.go
+++ b/src/service/work_order.go
@@ -194,7 +194,7 @@ func (w *WorkOrderManageSvc) DetailsWorkOrderManage(id int) (workOrderRes respon
 		}
 		workOrderRes.TimingRule = timingWeekly
 	} else if workOrder.TimingType == 3 {
-		var timingCustom request.TimingCustom
+		var timingCustom []request.TimingCustom
 		err = json.Unmarshal([]byte(workOrder.TimingRule), &timingCustom)
 		if err != nil {
 			err = resp.FAIL.WithError(err)