diff --git a/wled00/xml.cpp b/wled00/xml.cpp
index dc2673271..0893e5d25 100644
--- a/wled00/xml.cpp
+++ b/wled00/xml.cpp
@@ -465,7 +465,7 @@ void getSettingsJS(byte subPage, Print& settingsScript)
     printSetFormValue(settingsScript,PSTR("MG"),mqttGroupTopic);
     printSetFormCheckbox(settingsScript,PSTR("BM"),buttonPublishMqtt);
     printSetFormCheckbox(settingsScript,PSTR("RT"),retainMqttMsg);
-    settingsScript.printf_P(PSTR("d.Sf.MD.maxlength=%d;d.Sf.MG.maxlength=%d;d.Sf.MS.maxlength=%d;"),
+    settingsScript.printf_P(PSTR("d.Sf.MD.maxLength=%d;d.Sf.MG.maxLength=%d;d.Sf.MS.maxLength=%d;"),
                   MQTT_MAX_TOPIC_LEN, MQTT_MAX_TOPIC_LEN, MQTT_MAX_SERVER_LEN);
     #else
     settingsScript.print(F("toggle('MQTT');"));    // hide MQTT settings