diff --git a/pages/common/mosquitto_sub.md b/pages/common/mosquitto_sub.md
index 34ff239ce..e2e087866 100644
--- a/pages/common/mosquitto_sub.md
+++ b/pages/common/mosquitto_sub.md
@@ -1,6 +1,7 @@
 # mosquitto_sub
 
 > A simple MQTT version 3.1.1 client that will subscribe to topics and print the messages that it receives.
+> More information: <https://mosquitto.org/man/mosquitto_sub-1.html>.
 
 - Subscribe to the topic `sensors/temperature` information with Quality of Service (`QoS`) set to 1. (The default hostname is `localhost` and port `1883`):