diff --git a/test/fixtures/simple_regional_with_gateway_api/example.tf b/test/fixtures/simple_regional_with_gateway_api/example.tf
index 6b46123139..189a65ba1e 100644
--- a/test/fixtures/simple_regional_with_gateway_api/example.tf
+++ b/test/fixtures/simple_regional_with_gateway_api/example.tf
@@ -14,17 +14,21 @@
  * limitations under the License.
  */
 
+locals {
+  cluster_index = 1
+}
+
 module "example" {
   source = "../../../examples/simple_regional_with_gateway_api"
 
-  project_id                     = var.project_ids[2]
+  project_id                     = var.project_ids[local.cluster_index]
   cluster_name_suffix            = "-${random_string.suffix.result}"
   region                         = var.region
   network                        = google_compute_network.main.name
   subnetwork                     = google_compute_subnetwork.main.name
   ip_range_pods                  = google_compute_subnetwork.main.secondary_ip_range[0].range_name
   ip_range_services              = google_compute_subnetwork.main.secondary_ip_range[1].range_name
-  compute_engine_service_account = var.compute_engine_service_accounts[0]
+  compute_engine_service_account = var.compute_engine_service_accounts[local.cluster_index]
   skip_provisioners              = true
   enable_binary_authorization    = true
   gateway_api_channel            = "CHANNEL_STANDARD"
diff --git a/test/fixtures/simple_regional_with_gateway_api/network.tf b/test/fixtures/simple_regional_with_gateway_api/network.tf
index 94bb29e63c..a7ca31698a 100644
--- a/test/fixtures/simple_regional_with_gateway_api/network.tf
+++ b/test/fixtures/simple_regional_with_gateway_api/network.tf
@@ -21,7 +21,7 @@ resource "random_string" "suffix" {
 }
 
 provider "google" {
-  project = var.project_ids[0]
+  project = var.project_ids[local.cluster_index]
 }
 
 resource "google_compute_network" "main" {