diff --git a/aws-ts-vpc-with-ecs-fargate-py/ecs-fargate-python/__main__.py b/aws-ts-vpc-with-ecs-fargate-py/ecs-fargate-python/__main__.py
index 677c63ea9..9c71c6472 100644
--- a/aws-ts-vpc-with-ecs-fargate-py/ecs-fargate-python/__main__.py
+++ b/aws-ts-vpc-with-ecs-fargate-py/ecs-fargate-python/__main__.py
@@ -11,7 +11,7 @@
 config = Config()
 
 # reading in vpc StackReference Path from local config
-mystackpath = config.get("mystackpath")
+mystackpath = config.require("mystackpath")
 
 # setting the StackReference
 mycrosswalkvpc = StackReference(mystackpath)