diff --git a/libraries/ESP8266WiFi/src/ESP8266WiFi.h b/libraries/ESP8266WiFi/src/ESP8266WiFi.h
index d7b56ca92..50223af19 100644
--- a/libraries/ESP8266WiFi/src/ESP8266WiFi.h
+++ b/libraries/ESP8266WiFi/src/ESP8266WiFi.h
@@ -1,6 +1,6 @@
 /*
  ESP8266WiFi.h - esp8266 Wifi support.
- Based on WiFi.h from Ardiono WiFi shield library.
+ Based on WiFi.h from Arduino WiFi shield library.
  Copyright (c) 2011-2014 Arduino.  All right reserved.
  Modified by Ivan Grokhotkov, December 2014