diff --git a/examples/fargate-cluster/variables.ecs.tf b/examples/fargate-cluster/variables.ecs.tf
index ced4139..49005b9 100644
--- a/examples/fargate-cluster/variables.ecs.tf
+++ b/examples/fargate-cluster/variables.ecs.tf
@@ -11,7 +11,7 @@ variable "ecs_vpc_filter" {
   type = string
 }
 
-variable "container_subnet_filter" {
+variable "ecs_container_subnet_filter" {
   description = "Container subnet filter (ex., *-container-*) to use to select the container subents in this VPC"
   type = string
 }