diff --git a/content/actions/guides/deploying-to-amazon-elastic-container-service.md b/content/actions/guides/deploying-to-amazon-elastic-container-service.md
index dde155426c..64f0faf946 100644
--- a/content/actions/guides/deploying-to-amazon-elastic-container-service.md
+++ b/content/actions/guides/deploying-to-amazon-elastic-container-service.md
@@ -77,11 +77,11 @@ on:
 env:
   AWS_REGION: MY_AWS_REGION                   # set this to your preferred AWS region, e.g. us-west-1
   ECR_REPOSITORY: MY_ECR_REPOSITORY           # set this to your Amazon ECR repository name
-  ECS_SERVICE: MY-ECS-SERVICE                 # set this to your Amazon ECS service name
-  ECS_CLUSTER: MY-ECS-CLUSTER                 # set this to your Amazon ECS cluster name
-  ECS_TASK_DEFINITION: MY-ECS-TASK-DEFINITION # set this to the path to your Amazon ECS task definition
+  ECS_SERVICE: MY_ECS_SERVICE                 # set this to your Amazon ECS service name
+  ECS_CLUSTER: MY_ECS_CLUSTER                 # set this to your Amazon ECS cluster name
+  ECS_TASK_DEFINITION: MY_ECS_TASK_DEFINITION # set this to the path to your Amazon ECS task definition
                                                # file, e.g. .aws/task-definition.json
-  CONTAINER_NAME: MY-CONTAINER-NAME           # set this to the name of the container in the
+  CONTAINER_NAME: MY_CONTAINER_NAME           # set this to the name of the container in the
                                                # containerDefinitions section of your task definition
 
 defaults: