diff --git a/lib/esp-knx-ip-0.5.1/esp-knx-ip.h b/lib/esp-knx-ip-0.5.1/esp-knx-ip.h
index d8fde1dc9..515a5d843 100644
--- a/lib/esp-knx-ip-0.5.1/esp-knx-ip.h
+++ b/lib/esp-knx-ip-0.5.1/esp-knx-ip.h
@@ -7,14 +7,6 @@
 #ifndef ESP_KNX_IP_H
 #define ESP_KNX_IP_H
 
-//#define USE_ASYNC_UDP     // UDP WIFI Library Selection for Multicast
-                          //   If commented out, the esp-knx-ip library will use WIFI_UDP Library that is compatible with ESP8266 Library Version 2.3.0 and up
-                          //   If not commented out, the esp-knx-ip library will use ESPAsyncUDP Library that is compatible with ESP8266 Library Version 2.4.0 and up
-                          //     The ESPAsyncUDP Library have a more reliable multicast communication
-                          //     Please Use it with Patch (https://github.com/me-no-dev/ESPAsyncUDP/pull/21) )
-                          //     check line 57 on esp-knx-ip.h file is uncommented: #include <ESPAsyncUDP.h>
-                          //       Comment out that line when using UDP WIFI to avoid compiling issues on PlatformIO with ESP8266 Library Version 2.3.0
-
 /**
  * CONFIG
  * All MAX_ values must not exceed 255 (1 byte, except MAC_CONFIG_SPACE which can go up to 2 bytes, so 0xffff in theory) and must not be negative!
@@ -54,8 +46,13 @@
 #include <EEPROM.h>
 #include <ESP8266WiFi.h>
 
+#include <core_version.h>         // Arduino_Esp8266 version information (ARDUINO_ESP8266_RELEASE and ARDUINO_ESP8266_RELEASE_2_3_0)
+#ifndef ARDUINO_ESP8266_RELEASE_2_3_0
+#define USE_ASYNC_UDP             // UDP WIFI Library Selection for Multicast
+#endif
+
 #ifdef USE_ASYNC_UDP
-//#include <ESPAsyncUDP.h>
+#include <ESPAsyncUDP.h>
 #else
 #include <WiFiUdp.h>
 #endif