diff --git a/ecs/pkg/amazon/x.go b/ecs/pkg/amazon/x.go
index b16c3d253..315c50c4c 100644
--- a/ecs/pkg/amazon/x.go
+++ b/ecs/pkg/amazon/x.go
@@ -4,5 +4,5 @@ const (
 	ExtensionSecurityGroup   = "x-aws-securitygroup"
 	ExtensionVPC             = "x-aws-vpc"
 	ExtensionPullCredentials = "x-aws-pull_credentials"
-	ExtensionLB              = "x-aws-lb"
+	ExtensionLB              = "x-aws-loadbalancer"
 )