diff --git a/contrib/terraform/hetzner/modules/kubernetes-cluster-flatcar/main.tf b/contrib/terraform/hetzner/modules/kubernetes-cluster-flatcar/main.tf
index e6bce7d06..804c5038e 100644
--- a/contrib/terraform/hetzner/modules/kubernetes-cluster-flatcar/main.tf
+++ b/contrib/terraform/hetzner/modules/kubernetes-cluster-flatcar/main.tf
@@ -57,7 +57,7 @@ resource "hcloud_server" "master" {
     connection {
       host    = self.ipv4_address
       timeout = "3m"
-      user    = ${var.user_flatcar}
+      user    = var.user_flatcar
     }
 
     inline = [
@@ -114,7 +114,7 @@ resource "hcloud_server" "worker" {
     connection {
       host    = self.ipv4_address
       timeout = "3m"
-      user    = ${var.user_flatcar}
+      user    = var.user_flatcar
     }
 
     inline = [