diff --git a/lp-ddns/etc/cron.d/lp-ddns b/lp-ddns/etc/cron.d/lp-ddns
index db9f419..be91b21 100644
--- a/lp-ddns/etc/cron.d/lp-ddns
+++ b/lp-ddns/etc/cron.d/lp-ddns
@@ -1 +1,6 @@
-*/30 * * * /usr/local/bin/lp-ddns >/dev/null 2>&1
+# Please modify this according to your needs.
+# This crontab works on Debian, but certain distro may interpret this differently.
+
+
+#@reboot /usr/local/bin/lp-ddns >/dev/null 2>&1
+#*/30 * * * /usr/local/bin/lp-ddns >/dev/null 2>&1