diff --git a/sonoff/support_wifi.ino b/sonoff/support_wifi.ino
index de2cb9b9c..6f19546a3 100644
--- a/sonoff/support_wifi.ino
+++ b/sonoff/support_wifi.ino
@@ -350,10 +350,14 @@ void WifiCheckIp(void)
       Settings.ip_address[3] = (uint32_t)WiFi.dnsIP();
     }
     wifi_status = WL_CONNECTED;
+#ifdef USE_DISCOVERY
+#ifdef WEBSERVER_ADVERTISE
     if (2 == mdns_begun) {
       MDNS.update();
       AddLog_P(LOG_LEVEL_DEBUG_MORE, D_LOG_MDNS, "MDNS.update");
     }
+#endif  // USE_DISCOVERY
+#endif  // WEBSERVER_ADVERTISE
   } else {
     WifiSetState(0);
     uint8_t wifi_config_tool = Settings.sta_config;