diff --git a/lambda/mbj-newdwh2021-staging-lambda-sap-fin-receive-check-daily.py b/lambda/mbj-newdwh2021-staging-lambda-sap-fin-receive-check-daily.py
index 191e7856..8a894c91 100644
--- a/lambda/mbj-newdwh2021-staging-lambda-sap-fin-receive-check-daily.py
+++ b/lambda/mbj-newdwh2021-staging-lambda-sap-fin-receive-check-daily.py
@@ -124,10 +124,11 @@ def lambda_handler(event, context):
         # 2.日次I/Fファイルチェック処理
         logger.info('I-04-03 日次I/Fファイルチェック処理開始')
         logger.info('I-04-04 取得したオブジェクトリストと日次I/Fファイルネーム設定ファイルの突き合わせを開始します')
-        row_count = sum(1 for line in open(io.TextIOWrapper(io.BytesIO(receive_daily_file_name_response["Body"].read()), encoding='utf-8')))
+        row_count = 0
         match_count = 0
         receive_daily_file_name_body = io.TextIOWrapper(io.BytesIO(receive_daily_file_name_response["Body"].read()), encoding='utf-8')
-        for row in csv.reader(receive_daily_file_name_body, delimiter='\t'):
+        for i, row in enumerate(csv.reader(receive_daily_file_name_body, delimiter='\t'), 1):
+            row_count = i
             file_exists = False
             for file_name in file_list:
                 match_result = re.fullmatch(row[INDEX_REGEX], file_name)
diff --git a/lambda/mbj-newdwh2021-staging-lambda-sap-sup-receive-check-daily.py b/lambda/mbj-newdwh2021-staging-lambda-sap-sup-receive-check-daily.py
index f34fc592..2f43f12d 100644
--- a/lambda/mbj-newdwh2021-staging-lambda-sap-sup-receive-check-daily.py
+++ b/lambda/mbj-newdwh2021-staging-lambda-sap-sup-receive-check-daily.py
@@ -124,10 +124,11 @@ def lambda_handler(event, context):
         # 2.日次I/Fファイルチェック処理
         logger.info('I-04-03 日次I/Fファイルチェック処理開始')
         logger.info('I-04-04 取得したオブジェクトリストと日次I/Fファイルネーム設定ファイルの突き合わせを開始します')
-        row_count = sum(1 for line in open(io.TextIOWrapper(io.BytesIO(receive_daily_file_name_response["Body"].read()), encoding='utf-8')))
+        row_count = 0
         match_count = 0
         receive_daily_file_name_body = io.TextIOWrapper(io.BytesIO(receive_daily_file_name_response["Body"].read()), encoding='utf-8')
-        for row in csv.reader(receive_daily_file_name_body, delimiter='\t'):
+        for i, row in enumerate(csv.reader(receive_daily_file_name_body, delimiter='\t'), 1):
+            row_count = i
             file_exists = False
             for file_name in file_list:
                 match_result = re.fullmatch(row[INDEX_REGEX], file_name)