diff --git a/infrastructure/main.tf b/infrastructure/main.tf
index 2ea759c7..116e7e8a 100644
--- a/infrastructure/main.tf
+++ b/infrastructure/main.tf
@@ -101,9 +101,9 @@ resource "local_file" "mwaa_variables" {
       stac_ingestor_api_url   = var.stac_ingestor_api_url
       stac_url                = var.stac_url
       vector_secret_name      = var.vector_secret_name
-      vector_subnet_1         = data.aws_subnets.private.ids[0]
-      vector_subnet_2         = data.aws_subnets.private.ids[1]
-      vector_security_group   = aws_security_group.vector_sg[0].id
+      vector_subnet_1         = length(data.aws_subnets.private.ids) > 0 ? data.aws_subnets.private.ids[0] : ""
+      vector_subnet_2         = length(data.aws_subnets.private.ids) > 0 ? data.aws_subnets.private.ids[1] : ""
+      vector_security_group   = length(aws_security_group.vector_sg) > 0 ? aws_security_group.vector_sg[0].id : ""
       vector_vpc              = var.vector_vpc
   })
   filename = "/tmp/mwaa_vars.json"