diff --git a/README.md b/README.md
index 183772f27aa5cf4ca1665fc4b8ed7f5e7ced3d93..98f25a94da9a4ea12ac1c9157229f7d6e7456855 100644
--- a/README.md
+++ b/README.md
@@ -38,4 +38,6 @@ php /home/pi/sensor/updateSensor.php
 and add the following crontab using `sudo crontab -e`.
 ```
 @reboot php /home/pi/sensor/updateSensor.php
-```
\ No newline at end of file
+```
+
+Then reboot your Raspberry Pi to make the crontab start for the first time.
\ No newline at end of file