diff --git a/kdb-bot/src/bot_api/service/auth_service.py b/kdb-bot/src/bot_api/service/auth_service.py
index 4c9fcaf190..bf5d9f86c1 100644
--- a/kdb-bot/src/bot_api/service/auth_service.py
+++ b/kdb-bot/src/bot_api/service/auth_service.py
@@ -349,7 +349,7 @@ class AuthService(AuthServiceABC):
             raise ServiceException(ServiceErrorCode.InvalidUser, 'Wrong password')
 
         # update password
-        if self._hash_sha256(update_user_dto.new_auth_user.password, user.password_salt) != user.password:
+        if update_user_dto.new_auth_user.password is not None and self._hash_sha256(update_user_dto.new_auth_user.password, user.password_salt) != user.password:
             user.password_salt = uuid.uuid4()
             user.password = self._hash_sha256(update_user_dto.new_auth_user.password, user.password_salt)