diff --git a/ecs/jskult-webapp/src/controller/login.py b/ecs/jskult-webapp/src/controller/login.py
index 00e5cb75..d8e7d569 100644
--- a/ecs/jskult-webapp/src/controller/login.py
+++ b/ecs/jskult-webapp/src/controller/login.py
@@ -69,10 +69,10 @@ def login(
     try:
         jwt_token = login_service.login(request.username, request.password)
     except NotAuthorizeException as e:
-        logger.info(f'ログイン失敗：{e}')
+        logger.exception(e)
         raise HTTPException(status_code=status.HTTP_401_UNAUTHORIZED, detail=constants.LOGOUT_REASON_LOGIN_ERROR)
     except JWTTokenVerifyException as e:
-        logger.info(f'ログイン失敗：{e}')
+        logger.exception(e)
         raise HTTPException(status_code=status.HTTP_401_UNAUTHORIZED, detail=constants.LOGOUT_REASON_SESSION_EXPIRED)
 
     verified_token = jwt_token.verify_token()
@@ -130,7 +130,7 @@ def sso_authorize(
         # トークン検証
         verified_token = jwt_token.verify_token()
     except JWTTokenVerifyException as e:
-        logger.exception(f'SSOログイン失敗：{e}')
+        logger.exception(e)
         raise HTTPException(status_code=status.HTTP_401_UNAUTHORIZED, detail=constants.LOGOUT_REASON_SESSION_EXPIRED)
 
     # トークンからユーザーIDを取得