diff --git a/lib/usbhost/USB_Host_Shield_2.0/SPP.cpp b/lib/usbhost/USB_Host_Shield_2.0/SPP.cpp
index 8169707661..0f4ee5e981 100644
--- a/lib/usbhost/USB_Host_Shield_2.0/SPP.cpp
+++ b/lib/usbhost/USB_Host_Shield_2.0/SPP.cpp
@@ -757,7 +757,7 @@ size_t SPP::write(const uint8_t *data, size_t size) {
 void SPP::write(const uint8_t *data, size_t size) {
 #endif
         for(uint8_t i = 0; i < size; i++) {
-                if(sppIndex >= ARRAY_SIZE(sppOutputBuffer))
+                if(sppIndex >= sizeof (sppOutputBuffer) / sizeof (sppOutputBuffer[0]))
                         send(); // Send the current data in the buffer
                 sppOutputBuffer[sppIndex++] = data[i]; // All the bytes are put into a buffer and then send using the send() function
         }
diff --git a/lib/usbhost/USB_Host_Shield_2.0/examples/Bluetooth/PS3Multi/PS3Multi.ino b/lib/usbhost/USB_Host_Shield_2.0/examples/Bluetooth/PS3Multi/PS3Multi.ino
index 11833334d0..5ebfd7819c 100644
--- a/lib/usbhost/USB_Host_Shield_2.0/examples/Bluetooth/PS3Multi/PS3Multi.ino
+++ b/lib/usbhost/USB_Host_Shield_2.0/examples/Bluetooth/PS3Multi/PS3Multi.ino
@@ -19,7 +19,7 @@ USB Usb;
 
 BTD Btd(&Usb); // You have to create the Bluetooth Dongle instance like so
 PS3BT *PS3[2]; // We will use this pointer to store the two instance, you can easily make it larger if you like, but it will use a lot of RAM!
-const uint8_t length = ARRAY_SIZE(PS3); // Get the lenght of the array
+const uint8_t length = sizeof(PS3) / sizeof(PS3[0]); // Get the lenght of the array
 bool printAngle[length];
 bool oldControllerState[length];
 
diff --git a/lib/usbhost/USB_Host_Shield_2.0/examples/Bluetooth/WiiMulti/WiiMulti.ino b/lib/usbhost/USB_Host_Shield_2.0/examples/Bluetooth/WiiMulti/WiiMulti.ino
index 93cd084651..07c6f13d2b 100644
--- a/lib/usbhost/USB_Host_Shield_2.0/examples/Bluetooth/WiiMulti/WiiMulti.ino
+++ b/lib/usbhost/USB_Host_Shield_2.0/examples/Bluetooth/WiiMulti/WiiMulti.ino
@@ -19,7 +19,7 @@ USB Usb;
 
 BTD Btd(&Usb); // You have to create the Bluetooth Dongle instance like so
 WII *Wii[2]; // We will use this pointer to store the two instance, you can easily make it larger if you like, but it will use a lot of RAM!
-const uint8_t length = ARRAY_SIZE(Wii); // Get the lenght of the array
+const uint8_t length = sizeof(Wii) / sizeof(Wii[0]); // Get the lenght of the array
 bool printAngle[length];
 bool oldControllerState[length];
 
diff --git a/lib/usbhost/USB_Host_Shield_2.0/examples/HID/le3dp/le3dp_rptparser.h b/lib/usbhost/USB_Host_Shield_2.0/examples/HID/le3dp/le3dp_rptparser.h
index 05dab14afe..2400364e65 100644
--- a/lib/usbhost/USB_Host_Shield_2.0/examples/HID/le3dp/le3dp_rptparser.h
+++ b/lib/usbhost/USB_Host_Shield_2.0/examples/HID/le3dp/le3dp_rptparser.h
@@ -25,7 +25,7 @@ public:
 	virtual void OnGamePadChanged(const GamePadEventData *evt);
 };
 
-#define RPT_GAMEPAD_LEN	sizeof(GamePadEventData)
+#define RPT_GAMEPAD_LEN	sizeof(GamePadEventData)/sizeof(uint8_t)
 
 class JoystickReportParser : public HIDReportParser
 {
diff --git a/lib/usbhost/USB_Host_Shield_2.0/examples/HID/scale/scale_rptparser.h b/lib/usbhost/USB_Host_Shield_2.0/examples/HID/scale/scale_rptparser.h
index 7af18b88f7..57fbb033bf 100644
--- a/lib/usbhost/USB_Host_Shield_2.0/examples/HID/scale/scale_rptparser.h
+++ b/lib/usbhost/USB_Host_Shield_2.0/examples/HID/scale/scale_rptparser.h
@@ -38,7 +38,7 @@ public:
 	virtual void OnScaleChanged(const ScaleEventData *evt);
 };
 
-#define RPT_SCALE_LEN	sizeof(ScaleEventData)
+#define RPT_SCALE_LEN	sizeof(ScaleEventData)/sizeof(uint8_t)
 
 class ScaleReportParser : public HIDReportParser
 {