diff --git a/main.tf b/main.tf
index f6a5775a6ae608db7c0177471bce43498c37ad09..4ef94a72667bd06e436aa1c77804d4c4cfb93489 100644
--- a/main.tf
+++ b/main.tf
@@ -96,7 +96,7 @@ resource "ansible_host" "hcloud-host" {
   inventory_hostname = "${hcloud_server.generic-hcloud.name}"
   groups             = "${concat(var.ansible_groups, var.hcloud_ansible_groups)}"
 
-  vars {
+  vars = {
     ansible_user          = "root"
     ansible_host          = "${hcloud_server.generic-hcloud.ipv4_address}"
     wireguard_address     = "${var.wireguard_address}"