diff --git a/doc/Extensions/Fast-Ping-Check.md b/doc/Extensions/Fast-Ping-Check.md
index 0a44033ef6..7e73738b00 100644
--- a/doc/Extensions/Fast-Ping-Check.md
+++ b/doc/Extensions/Fast-Ping-Check.md
@@ -33,6 +33,8 @@ to run ping checks as quickly as possible without increasing snmp load on your d
 *    *    * * *   librenms    /opt/librenms/ping.php >> /dev/null 2>&1
 ```
 
+> **NOTE**: If you are using distributed pollers you can restrict a poller to a group by appending `-g` to the cron entry.  Alternatively, you should only run ping.php on a single node.
+
 #### Sub minute ping check
 
 Cron only has a resolution of one minute, so we have to use a trick to allow sub minute checks.