diff --git a/internal/domain/main-entities/material/dto.go b/internal/domain/main-entities/material/dto.go
index e466e5df..ec565e59 100644
--- a/internal/domain/main-entities/material/dto.go
+++ b/internal/domain/main-entities/material/dto.go
@@ -57,7 +57,7 @@ type ResponseDto struct {
 	Uom_Code string   `json:"uom_code"`
 	Uom      *eu.Uom  `json:"uom,omitempty"`
 	Stock    *int     `json:"stock"`
-	Item_Id  uint     `json:"item_id"`
+	Item_Id  *uint    `json:"item_id"`
 	Item     *ei.Item `json:"item,omitempty"`
 }
 
diff --git a/internal/domain/main-entities/material/entity.go b/internal/domain/main-entities/material/entity.go
index 8f10d0e5..c14aac78 100644
--- a/internal/domain/main-entities/material/entity.go
+++ b/internal/domain/main-entities/material/entity.go
@@ -13,6 +13,6 @@ type Material struct {
 	Uom_Code   string   `json:"uom_code" gorm:"size:10"`
 	Uom        *eu.Uom  `json:"uom,omitempty" gorm:"foreignKey:Uom_Code;references:Code"`
 	Stock      *int     `json:"stock"`
-	Item_Id    uint     `json:"item_id"`
+	Item_Id    *uint    `json:"item_id"`
 	Item       *ei.Item `json:"item,omitempty" gorm:"foreignKey:Item_Id;references:Id"`
 }
diff --git a/internal/use-case/main-use-case/material/helper.go b/internal/use-case/main-use-case/material/helper.go
index 4e674eb9..11b4900c 100644
--- a/internal/use-case/main-use-case/material/helper.go
+++ b/internal/use-case/main-use-case/material/helper.go
@@ -21,5 +21,5 @@ func setData[T *e.CreateDto | *e.UpdateDto](input T, data *e.Material) {
 	data.Name = inputSrc.Name
 	data.Uom_Code = inputSrc.Uom_Code
 	data.Stock = inputSrc.Stock
-	data.Item_Id = *inputSrc.Item_Id
+	data.Item_Id = inputSrc.Item_Id
 }