diff --git a/roles/timesync-enabled/tasks/timesync_busybox-ntp.yml b/roles/timesync-enabled/tasks/timesync_busybox-ntp.yml
index 46edd17..f366f85 100644
--- a/roles/timesync-enabled/tasks/timesync_busybox-ntp.yml
+++ b/roles/timesync-enabled/tasks/timesync_busybox-ntp.yml
@@ -1,4 +1,10 @@
 ---
+- assert:
+    that:
+      - ansible_os_family|lower == "alpine"
+    fail_msg: "Busybox NTP supported only on Alpine. Patches welcome ;)"
+
+
 - name: Template ntp.conf
   template:
     src: etc/busybox-ntp.conf.j2