diff --git a/cores/esp8266/Arduino.h b/cores/esp8266/Arduino.h
index 2a88be9dc..b6f442e5c 100644
--- a/cores/esp8266/Arduino.h
+++ b/cores/esp8266/Arduino.h
@@ -37,6 +37,7 @@ extern "C" {
 #include "binary.h"
 #include "esp8266_peri.h"
 #include "twi.h"
+#include "core_esp8266_features.h"
 
 #define HIGH 0x1
 #define LOW  0x0
diff --git a/cores/esp8266/core_esp8266_features.h b/cores/esp8266/core_esp8266_features.h
index ae5d58539..0dc202383 100644
--- a/cores/esp8266/core_esp8266_features.h
+++ b/cores/esp8266/core_esp8266_features.h
@@ -28,6 +28,8 @@
 #define CORE_HAS_LIBB64
 #define CORE_HAS_BASE64_CLASS
 
+#define WIFI_HAS_EVENT_CALLBACK
+
 
 #endif