diff --git a/CMakeLists.txt b/CMakeLists.txt
index 3e0975e..fd4e1c1 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -23,8 +23,6 @@ include_directories(${PROJECT_NAME}
 )
 
 file(GLOB SRCFILES
-#        "Lib/FreeRTOS/src/*.c"
-#        "Lib/FreeRTOS/src/*.cpp"
         Pins.h
         Network.cpp
         networkDevices/NetworkDevice.h
diff --git a/networkDevices/W5500Device.cpp b/networkDevices/W5500Device.cpp
index de32ff7..be7a64f 100644
--- a/networkDevices/W5500Device.cpp
+++ b/networkDevices/W5500Device.cpp
@@ -1,3 +1,5 @@
+#include <Arduino.h>
+#include <WiFi.h>
 #include "W5500Device.h"
 #include "../Pins.h"
 #include "../PreferencesKeys.h"
@@ -29,6 +31,8 @@ W5500Device::~W5500Device()
 
 void W5500Device::initialize()
 {
+    WiFi.mode(WIFI_OFF);    // Switch WiFi off
+
     resetDevice();
 
     Ethernet.init(ETHERNET_CS_PIN);