diff --git a/provider/indexer-aws/CloudFormation/Master/os-indexer-master.yml b/provider/indexer-aws/CloudFormation/Master/os-indexer-master.yml
index 0cc642e777d379ab28549801f10a184fa87291db..2ced0a925d5805bd57d185a64dd4222407a75121 100644
--- a/provider/indexer-aws/CloudFormation/Master/os-indexer-master.yml
+++ b/provider/indexer-aws/CloudFormation/Master/os-indexer-master.yml
@@ -100,7 +100,7 @@ Parameters:
       - m4.10xlarge
       - m4.16xlarge
       - t3.nano
-      - t3.large
+      - t3.micro
       - t3.small
       - t3.medium
       - t3.large