diff --git a/internal/modules/marketing/validations/deliveryorder.validation.go b/internal/modules/marketing/validations/deliveryorder.validation.go
index 4b7c1328..20719d55 100644
--- a/internal/modules/marketing/validations/deliveryorder.validation.go
+++ b/internal/modules/marketing/validations/deliveryorder.validation.go
@@ -5,7 +5,7 @@ type DeliveryProduct struct {
 	Qty                 float64  `json:"qty" validate:"omitempty,gte=0"`
 	UnitPrice           float64  `json:"unit_price" validate:"omitempty,gte=0"`
 	AvgWeight           float64  `json:"avg_weight" validate:"omitempty,gte=0"`
-	WeightPerConvertion *float64 `json:"weight_per_convertion" validate:"omitempty,gt=0"`
+	WeightPerConvertion *float64 `json:"weight_per_convertion" validate:"omitempty,gte=0"`
 	TotalWeight         *float64 `json:"total_weight" validate:"omitempty,gte=0"`
 	TotalPrice          *float64 `json:"total_price" validate:"omitempty,gte=0"`
 	DeliveryDate        string   `json:"delivery_date" validate:"omitempty,datetime=2006-01-02"`