diff --git a/master.tf b/master.tf
index e8eed4a..3d64c9b 100644
--- a/master.tf
+++ b/master.tf
@@ -63,7 +63,7 @@ resource "hcloud_server" "first_control_plane" {
       node-name                = self.name
       cluster-init             = true
       disable-cloud-controller = true
-      disable                  = "servicelb, local-storage"
+      disable                  = ["servicelb", "local-storage"]
       flannel-iface            = "eth1"
       kubelet-arg              = "cloud-provider=external"
       node-ip                  = local.first_control_plane_network_ip