diff --git a/models/booking/booking.go b/models/booking/booking.go
index 92b8035..51b3cd9 100644
--- a/models/booking/booking.go
+++ b/models/booking/booking.go
@@ -15,6 +15,7 @@ import (
 type Booking struct {
 	utils.AbstractObject // AbstractObject contains the basic fields of an object (id, name)
 
+	ToMaster   string                 `json:"to_master,omitempty" bson:"to_master,omitempty"`
 	FromNano   string                 `json:"from_nano,omitempty" bson:"priced_item,omitempty"`
 	PricedItem map[string]interface{} `json:"priced_item,omitempty" bson:"priced_item,omitempty"` // We need to add the validate:"required" tag once the pricing feature is implemented, removed to avoid handling the error