diff --git a/examples/terraform/oracle cloud free tier ampere instance/example.tfvars b/examples/terraform/oracle cloud free tier ampere instance/example.tfvars
index f269bb8..05c8c00 100644
--- a/examples/terraform/oracle cloud free tier ampere instance/example.tfvars	
+++ b/examples/terraform/oracle cloud free tier ampere instance/example.tfvars	
@@ -10,5 +10,5 @@ source_id = "ocid1.image.oc1.eu-amsterdam-1.aaaaaaaavmra3s4va4fqd4vlcrqc5v5jyqov
 
 ssh_authorized_keys = <<-EOT
   ssh-ed25519 key-1 comment
-  ssh-ed25519 key-n comment
+  ssh-ed25519 key-N comment
 EOT
diff --git a/examples/terraform/oracle cloud free tier ampere instance/main.tf b/examples/terraform/oracle cloud free tier ampere instance/main.tf
index 07408a7..dc3bfd6 100644
--- a/examples/terraform/oracle cloud free tier ampere instance/main.tf	
+++ b/examples/terraform/oracle cloud free tier ampere instance/main.tf	
@@ -1,3 +1,14 @@
+terraform {
+  required_version = "1.2.9"
+
+  required_providers {
+    oci = {
+      source  = "oracle/oci"
+      version = "4.107.0"
+    }
+  }
+}
+
 # See https://registry.terraform.io/providers/oracle/oci/latest/docs/resources/core_vcn
 resource "oci_core_vcn" "this" {
   compartment_id = var.compartment_id
diff --git a/examples/terraform/oracle cloud free tier ampere instance/variables.tf b/examples/terraform/oracle cloud free tier ampere instance/variables.tf
index fe0b21a..277d4cd 100644
--- a/examples/terraform/oracle cloud free tier ampere instance/variables.tf	
+++ b/examples/terraform/oracle cloud free tier ampere instance/variables.tf	
@@ -1,9 +1,18 @@
+####################
+# Oracle Cloud Account
+####################
+
 variable "availability_domain" {
   type = string
 }
 variable "compartment_id" {
   type = string
 }
+
+####################
+# Instance
+####################
+
 variable "shape" {
   type    = string
   default = "VM.Standard.A1.Flex"