diff --git a/wiringPi/wiringPiSPI.c b/wiringPi/wiringPiSPI.c
index 3cdbe3d..ff1ca66 100644
--- a/wiringPi/wiringPiSPI.c
+++ b/wiringPi/wiringPiSPI.c
@@ -100,7 +100,7 @@ void getDevice(char* spidev, int channel, int port) {
     sprintf(spidev, "/dev/spidev/%i.%i", channel, port);
 }
 
-int wiringPiSPISetupMode (int channel, int speed, int mode, int port)
+int wiringPiSPISetupMode (int channel, int port, int speed, int mode)
 {
   int fd ;
 
@@ -140,5 +140,5 @@ int wiringPiSPISetupMode (int channel, int speed, int mode, int port)
 
 int wiringPiSPISetup (int channel, int speed)
 {
-  return wiringPiSPISetupMode (channel, speed, 0) ;
+  return wiringPiSPISetupMode (channel, 0, speed, 0) ;
 }
diff --git a/wiringPi/wiringPiSPI.h b/wiringPi/wiringPiSPI.h
index 962f025..62c7aed 100644
--- a/wiringPi/wiringPiSPI.h
+++ b/wiringPi/wiringPiSPI.h
@@ -28,7 +28,7 @@ extern "C" {
 
 int wiringPiSPIGetFd     (int channel) ;
 int wiringPiSPIDataRW    (int channel, unsigned char *data, int len) ;
-int wiringPiSPISetupMode (int channel, int speed, int mode, int port=0) ;
+int wiringPiSPISetupMode (int channel, int port, int speed, int mode) ;
 int wiringPiSPISetup     (int channel, int speed) ;
 
 #ifdef __cplusplus