diff --git a/debian/main.tf b/debian/main.tf
index b188cdb..ef3a869 100644
--- a/debian/main.tf
+++ b/debian/main.tf
@@ -26,4 +26,5 @@ module "tf_debian_vm" {
   data_disk             = var.data_disk
   fixed_address         = var.fixed_address
   ansible_command       = var.ansible_command
+  mac                   = var.mac
 }
diff --git a/debian/variables.tf b/debian/variables.tf
index 5b5d907..42d4642 100644
--- a/debian/variables.tf
+++ b/debian/variables.tf
@@ -66,3 +66,8 @@ variable "ansible_command" {
   type    = string
   default = "true"
 }
+
+variable "mac" {
+  type    = string
+  default = null
+}