diff --git a/src/idz/userdb/encoder/index.ts b/src/idz/userdb/encoder/index.ts
index 3b8edae..d2a89fa 100644
--- a/src/idz/userdb/encoder/index.ts
+++ b/src/idz/userdb/encoder/index.ts
@@ -1,5 +1,4 @@
 import logger from "debug";
-import { Transform } from "stream";
 
 import { _team } from "./_team";
 import { checkTeamName } from "./checkTeamName";
diff --git a/src/idz/userdb/request/saveProfile.ts b/src/idz/userdb/request/saveProfile.ts
index 82e7700..f84541a 100644
--- a/src/idz/userdb/request/saveProfile.ts
+++ b/src/idz/userdb/request/saveProfile.ts
@@ -1,4 +1,4 @@
-import { BackgroundCode, CourseNo, ExtId, TitleCode } from "../model/base";
+import { BackgroundCode, CourseNo, TitleCode } from "../model/base";
 import { Car } from "../model/car";
 import { MissionState } from "../model/mission";
 import { Settings } from "../model/settings";