diff --git a/tasks/main.yaml b/tasks/main.yaml
index 7fe4cc1..fd447a1 100644
--- a/tasks/main.yaml
+++ b/tasks/main.yaml
@@ -8,6 +8,7 @@
 # set hostname
 - name: "set hostname"
   ansible.builtin.import_tasks: "hostname.yaml"
+  when: "ansible_os_family == 'Debian'"
   tags: "hostname"
 
 # set locale
diff --git a/vars/Alpine.yaml b/vars/Alpine.yaml
deleted file mode 100644
index 5c678b6..0000000
--- a/vars/Alpine.yaml
+++ /dev/null
@@ -1,4 +0,0 @@
----
-
-# hostname
-hostname_use_method: "generic"