diff --git a/devd-51-blink1.conf b/devd-51-blink1.conf
index a19300b..af4300d 100644
--- a/devd-51-blink1.conf
+++ b/devd-51-blink1.conf
@@ -1,4 +1,6 @@
 # FreeBSD devd rule for blink(1) USB LED
+# This file goes in the /usr/local/etc/devd directory, then
+# do "service devd restart" and unplug/replug the blink(1) device
 notify 51 {
        match "system" "USB";
        match "subsystem" "DEVICE";