diff --git a/terraform/modules/google-cloud/apps/relay/main.tf b/terraform/modules/google-cloud/apps/relay/main.tf
index c0e52dba1..280f7ff7b 100644
--- a/terraform/modules/google-cloud/apps/relay/main.tf
+++ b/terraform/modules/google-cloud/apps/relay/main.tf
@@ -357,7 +357,7 @@ resource "google_compute_region_instance_group_manager" "application" {
 
 # TODO: Rate limit requests to the relays by source IP address
 
-# Open ports for the web
+# Open ports for STUN and TURN
 resource "google_compute_firewall" "stun-turn-ipv4" {
   project = var.project_id
 
diff --git a/terraform/modules/google-cloud/apps/relay/variables.tf b/terraform/modules/google-cloud/apps/relay/variables.tf
index 6adf9ba96..94c104224 100644
--- a/terraform/modules/google-cloud/apps/relay/variables.tf
+++ b/terraform/modules/google-cloud/apps/relay/variables.tf
@@ -23,18 +23,6 @@ variable "network" {
   description = "ID of a Google Cloud Network"
 }
 
-variable "base_cidr_block" {
-  type        = string
-  default     = "10.128.0.0/9"
-  description = "The base CIDR block for subnets. Must not overlap with existing subnet."
-}
-
-variable "extension_bits" {
-  type        = number
-  default     = 15
-  description = "Number of bits to extend the base CIDR block by."
-}
-
 ################################################################################
 ## Container Registry
 ################################################################################