diff --git a/src/Schedule/schedule.schema.ts b/src/Schedule/schedule.schema.ts
index 9230034..4b21542 100644
--- a/src/Schedule/schedule.schema.ts
+++ b/src/Schedule/schedule.schema.ts
@@ -44,6 +44,10 @@ export class ScheduleSchema extends PothosSchema {
           description: 'The ID of the order the schedule belongs to.',
           nullable: true,
         }),
+        order: t.relation('Order', {
+          description: 'The order that belongs to orderId.',
+          nullable: true,
+        }),
         scheduleStart: t.expose('scheduleStart', {
           type: 'DateTime',
           nullable: false,