Multiple wakealarm syslog CRON messages

Openmediavault 4.0.17-1 and Wakelaarm 3.3 installed

I have just installed wakealarm and still not configured any rule, but in the syslog I am getting this type of messages every minute since then (90 out of latest 100 messages are identical to this one):

CRON[32173]: (root) CMD (   test -x /usr/sbin/wakealarm && /usr/sbin/wakealarm > /dev/null 2>&1)

Is it a normal behaviour? Should I ignore them?

Thanks in advance.