diff --git a/internal/entities/product_warehouse.go b/internal/entities/product_warehouse.go
index 82607723..745dd298 100644
--- a/internal/entities/product_warehouse.go
+++ b/internal/entities/product_warehouse.go
@@ -7,17 +7,17 @@ import (
 )
 
 type ProductWarehouse struct {
-	Id          uint           `json:"id" gorm:"primaryKey;autoIncrement"`
-	ProductId   uint           `json:"product_id" gorm:"not null"`
-	WarehouseId uint           `json:"warehouse_id" gorm:"not null"`
-	Quantity    float64        `json:"quantity" gorm:"default:0"`
-	CreatedAt   time.Time      `json:"created_at" gorm:"autoCreateTime"`
-	UpdatedAt   time.Time      `json:"updated_at" gorm:"autoUpdateTime"`
-	CreatedBy   uint           `json:"created_by" gorm:"not null"`
+	Id          uint           `gorm:"primaryKey;autoIncrement"`
+	ProductId   uint           `gorm:"not null"`
+	WarehouseId uint           `gorm:"not null"`
+	Quantity    float64        `gorm:"default:0"`
+	CreatedAt   time.Time      `gorm:"autoCreateTime"`
+	UpdatedAt   time.Time      `gorm:"autoUpdateTime"`
+	CreatedBy   uint           `gorm:"not null"`
 	DeletedAt   gorm.DeletedAt `json:"-" gorm:"index"`
 
 	// Relations
-	Product     Product   `json:"product,omitempty" gorm:"foreignKey:ProductId;references:Id"`
-	Warehouse   Warehouse `json:"warehouse,omitempty" gorm:"foreignKey:WarehouseId;references:Id"`
-	CreatedUser User      `json:"created_user,omitempty" gorm:"foreignKey:CreatedBy;references:Id"`
+	Product     Product   `gorm:"foreignKey:ProductId;references:Id"`
+	Warehouse   Warehouse `gorm:"foreignKey:WarehouseId;references:Id"`
+	CreatedUser User      `gorm:"foreignKey:CreatedBy;references:Id"`
 }