diff --git a/storage/freezer.py b/storage/freezer.py
index 055bd0e..783bba4 100644
--- a/storage/freezer.py
+++ b/storage/freezer.py
@@ -1,3 +1,6 @@
+# in rc.local:
+#   su pi -c 'python3 /home/pi/freezer.py >> /home/pi/freezer.log 2>&1 &'
+
 import RPi.GPIO as GPIO
 import urllib.request
 import logging