diff --git a/internal/domain/main-entities/chemo/entity.go b/internal/domain/main-entities/chemo/entity.go
index f838c27d..4052ea72 100644
--- a/internal/domain/main-entities/chemo/entity.go
+++ b/internal/domain/main-entities/chemo/entity.go
@@ -22,5 +22,5 @@ type Chemo struct {
 	VerifiedBy         *eus.User            `json:"verifiedBy,omitempty" gorm:"foreignKey:VerifiedBy_User_Id;references:Id"`
 	SrcUnit_Id         *uint                `json:"src_unit_id"`
 	SrcUnit            *eun.Unit            `json:"src_unit,omitempty" gorm:"foreignKey:SrcUnit_Id;references:Id"`
-	ClassCode          ere.ChemoClassCode   `json:"class_code"`
+	Class_Code         ere.ChemoClassCode   `json:"class_code"`
 }