2 files changed, 4 insertions, 4 deletions
diff --git a/cores/arduino/xinput/USB_XInput_API.cpp b/cores/arduino/xinput/USB_XInput_API.cpp
index 678692d..ffd818c 100644
--- a/cores/arduino/xinput/USB_XInput_API.cpp
+++ b/cores/arduino/xinput/USB_XInput_API.cpp
@@ -34,7 +34,7 @@ boolean XInputUSB::connected() {
 	return USBDevice.configured();
 }
 
-int XInputUSB::available() {
+uint8_t XInputUSB::available() {
 	return USB_Available(XINPUT_RX_ENDPOINT);
 }
 
diff --git a/cores/arduino/xinput/USB_XInput_API.h b/cores/arduino/xinput/USB_XInput_API.h
index 9f2e686..11fa100 100644
--- a/cores/arduino/xinput/USB_XInput_API.h
+++ b/cores/arduino/xinput/USB_XInput_API.h
@@ -37,9 +37,9 @@ class XInputUSB {
 public:
 	// API
 	static bool connected(void);
-	static int  available(void);
-	static int  send(const void *buffer, uint8_t nbytes);
-	static int  recv(void *buffer, uint8_t nbytes);
+	static uint8_t available(void);
+	static int send(const void *buffer, uint8_t nbytes);
+	static int recv(void *buffer, uint8_t nbytes);
 	static void setRecvCallback(void(*callback)(void));
 
 	// Non-API Data