[nmglug] cron e-mail /dev/null

[a]

When there is "*.jpg" content the cronjob successfully reads:
"/home/kaluta/kaluta.us/jerry-camera/*.jpg".

When there is not "*.jpg" content (i.e. camera off). I am e-mailed the
following message hourly by cron:
"/usr/bin/find: /home/kaluta/kaluta.us/jerry-camera/*.jpg: No such file"
or directory.

Can anyone suggest a method of avoiding the "superfluous" hourly e-mail.
tnx, Anthony