diff --git a/YAOCMouse.ino b/YAOCMouse.ino
index 48ada01..240b345 100644
--- a/YAOCMouse.ino
+++ b/YAOCMouse.ino
@@ -4,6 +4,10 @@
 // SPI USB
 #include <hidboot.h>
 
+#define SPI_SCLK 32
+#define SPI_MISO 35
+#define SPI_MOSI 33
+#define SPI_SS    5
 
 #define PIN_MOUSE_V    19 // LAN_TX0
 #define PIN_MOUSE_VQ   26 // LAN_RX1
@@ -170,7 +174,7 @@ void setup() {
   Serial.println("INIT");
 
   Serial.print("USB init...");
-  SPI.begin(32, 35, 33, 5);
+  SPI.begin(SPI_SCLK, SPI_MISO, SPI_MOSI, SPI_SS);
 
   if (Usb.Init() == -1) {
     Serial.println("WARN: Usb init failed.");
@@ -183,8 +187,6 @@ void setup() {
 
   HidMouse.SetReportParser(0, &PrsMouse);
 
-  Serial.print("Interupts init...");
-
   Serial.println("Ready to rock and roll...");
 }