diff --git a/infra/input-vars.tf b/infra/input-vars.tf
index afb9896..9e233ef 100644
--- a/infra/input-vars.tf
+++ b/infra/input-vars.tf
@@ -103,3 +103,11 @@ variable "athens_cidr" {
 	description = "VPC Subnet CIDR block"
 	type = string
 }
+
+######################### Alpha Cluster variables
+
+variable "athens_prefix" {
+	description = "Prefix for all things in alpha cluster"
+	type = string
+	default = "athens"
+}