diff --git a/src/handlers/tariff/index.ts b/src/handlers/tariff/index.ts
index 2be1c37..7ce680d 100644
--- a/src/handlers/tariff/index.ts
+++ b/src/handlers/tariff/index.ts
@@ -108,16 +108,9 @@ export const replaceTariff = async (request: ReplaceTariffRequest, reply: Fastif
     throw new Error("tariff not found");
   }
 
-  for (const privilege of requestBody.privileges) {
-    if (!Types.ObjectId.isValid(privilege.privilegeId)) {
-      void reply.status(404);
-      throw new Error(`privilege id <${privilege.privilegeId}> invalid`);
-    }
-  }
-
   const privilegesMap = new Map(requestBody.privileges.map((privilege) => [privilege.privilegeId, privilege]));
   const privilegeIDs = requestBody.privileges.map(({ privilegeId }) => privilegeId);
-  const privileges = await PrivilegeModel.find({ _id: privilegeIDs }).lean();
+  const privileges = await PrivilegeModel.find({ privilegeId: privilegeIDs }).lean();
 
   const cleanPrivileges = privileges.map<Omit<Privilege, keyof Eloquent>>((privilege) => {
     const currentPrivilege = privilegesMap.get(privilege._id.toString());