diff --git a/libraries/ArduinoOTA/src/ArduinoOTA.cpp b/libraries/ArduinoOTA/src/ArduinoOTA.cpp
index 5e58a4c4857..19bb0bfffb2 100644
--- a/libraries/ArduinoOTA/src/ArduinoOTA.cpp
+++ b/libraries/ArduinoOTA/src/ArduinoOTA.cpp
@@ -120,7 +120,7 @@ void ArduinoOTAClass::begin() {
     sprintf(tmp, "esp32-%02x%02x%02x%02x%02x%02x", mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]);
     _hostname = tmp;
   }
-#ifdef MDNS_MAX_INTERFACES
+#ifdef CONFIG_MDNS_MAX_INTERFACES
   if (_mdnsEnabled) {
     MDNS.begin(_hostname.c_str());
     MDNS.enableArduino(_port, (_password.length() > 0));
@@ -360,7 +360,7 @@ void ArduinoOTAClass::_runUpdate() {
 void ArduinoOTAClass::end() {
   _initialized = false;
   _udp_ota.stop();
-#ifdef MDNS_MAX_INTERFACES
+#ifdef CONFIG_MDNS_MAX_INTERFACES
   if (_mdnsEnabled) {
     MDNS.end();
   }