diff --git a/ArduinoOSC.h b/ArduinoOSC.h
index 73788fa..afa9b6a 100644
--- a/ArduinoOSC.h
+++ b/ArduinoOSC.h
@@ -54,10 +54,10 @@
 #elif defined (TEENSYDUINO) || defined (ESP_PLATFORM) || defined (ESP8266)
     #ifdef ESP_PLATFORM
         #include "WiFi.h"
-        #include "WiFiUDP.h"
+        #include "WiFiUdp.h"
     #elif defined (ESP8266)
         #include "ESP8266WiFi.h"
-        #include "WiFiUDP.h"
+        #include "WiFiUdp.h"
     #endif
     #include "ArduinoOSC/OSCcommon.h"
     #include "ArduinoOSC/OSCMessage.h"