diff --git a/lambda/start-rds/start-rds.py b/lambda/start-rds/start-rds.py
index a077cb88..b35d7650 100644
--- a/lambda/start-rds/start-rds.py
+++ b/lambda/start-rds/start-rds.py
@@ -5,8 +5,8 @@ import boto3
 #環境変数
 client = boto3.client('rds')
 
-AUTO_START_TAG_TAGKEY = 'AUTO_START'
-AUTO_START_ENABLE = 'true'
+AUTO_START_TAG_TAGKEY = os.environ['AUTO_START_TAG_TAGKEY']
+AUTO_START_ENABLE = os.environ['AUTO_START_ENABLE']
 
 def lambda_handler(event, context):
     #クラスターを停止