diff --git a/ecs/jskult-batch-daily/src/batch/ultmarc/ultmarc_process.py b/ecs/jskult-batch-daily/src/batch/ultmarc/ultmarc_process.py
index 09733854..4180ee05 100644
--- a/ecs/jskult-batch-daily/src/batch/ultmarc/ultmarc_process.py
+++ b/ecs/jskult-batch-daily/src/batch/ultmarc/ultmarc_process.py
@@ -74,6 +74,7 @@ def _convert_character_hex(dat_file_path: str, config_file_path: str) -> str:
 
     for src_hex, dst_hex in hex_convert_config_dict.items():
         # sedコマンドで置き換え
+        # MacOSで実行する場合のコマンド
         # subprocess.call([f"export LANG=C && sed -i '' -e \"s/{src_hex}/{dst_hex}/g\" {dat_file_path}"], shell=True)
         subprocess.call([f"sed -e \"s/{src_hex}/{dst_hex}/g\" {dat_file_path}"], shell=True)
     logger.debug('文字コード変換終了')