diff --git a/tf-modulised/vpc-subnets/var-def.tf b/tf-modulised/vpc-subnets/var-def.tf
new file mode 100644
index 0000000..a84511d
--- /dev/null
+++ b/tf-modulised/vpc-subnets/var-def.tf
@@ -0,0 +1,12 @@
+variable "aws_access_key" {}
+variable "aws_secret_key" {}
+variable "aws_region" {}
+
+provider "aws" {
+  access_key = var.aws_access_key
+  secret_key = var.aws_secret_key
+  region     = var.aws_region
+  version = ">= 2.28.1"
+}
+
+variable "default-tags" {}