diff --git a/src/handlers/tariff/index.ts b/src/handlers/tariff/index.ts
index b8d6b2d..e848d37 100644
--- a/src/handlers/tariff/index.ts
+++ b/src/handlers/tariff/index.ts
@@ -61,13 +61,13 @@ export const createTariff = async (request: CreateTariffRequest, reply: FastifyR
 
   if (error) {
     void reply.status(400);
-    throw error;
+    return error;
   }
 
   for (const privilege of requestBody.privilegies) {
     if (!Types.ObjectId.isValid(privilege.privilegeId)) {
       void reply.status(404);
-      throw new Error(`privilege id <${privilege.privilegeId}> invalid`);
+      return new Error(`privilege id <${privilege.privilegeId}> invalid`);
     }
   }
 
@@ -97,9 +97,7 @@ export const createTariff = async (request: CreateTariffRequest, reply: FastifyR
     privilegies: cleanPrivilegies,
   });
 
-  await newTariff.save();
-
-  return newTariff;
+  return newTariff.save();
 };
 
 export const replaceTariff = async (request: ReplaceTariffRequest, reply: FastifyReply) => {