diff --git a/server/util-server.js b/server/util-server.js
index 08d17b774..27d2ab857 100644
--- a/server/util-server.js
+++ b/server/util-server.js
@@ -94,7 +94,7 @@ exports.mqttAsync = function (hostname, topic, okMessage, options = {}) {
     return new Promise((resolve, reject) => {
         const { port, username, password, interval = 20 } = options;
         try {
-            // Adds mqtt protocol to the hostname if not already present
+            // Adds MQTT protocol to the hostname if not already present
             if (!/^(?:http|mqtt)s?:\/\//.test(hostname)) {
                 hostname = "mqtt://" + hostname;
             }