diff --git a/src/EspMQTTClient.h b/src/EspMQTTClient.h
index 5511bf5..03a2663 100644
--- a/src/EspMQTTClient.h
+++ b/src/EspMQTTClient.h
@@ -19,6 +19,7 @@
 
 #else // for ESP32
 
+  #include <WiFi.h>
   #include <WiFiClient.h>
   #include <WebServer.h>
   #include <ESPmDNS.h>