diff --git a/src/monocoque/devices/serial/moza.c b/src/monocoque/devices/serial/moza.c
index 37f33b6..4aba2a2 100644
--- a/src/monocoque/devices/serial/moza.c
+++ b/src/monocoque/devices/serial/moza.c
@@ -28,7 +28,7 @@ unsigned char moza_checksum(unsigned char *data, unsigned short size)
     return ret % 0x100;
 }
 
-int moza_update(SerialDevice* serialdevice, unsigned short maxrpm, unsigned short rpm)
+int moza_update(SerialDevice* serialdevice, unsigned short rpm, unsigned short maxrpm)
 {
     unsigned char bytes[] = MOZA_SERIAL_TEMPLATE;
     unsigned short size = MOZA_PAYLOAD_SIZE;
diff --git a/src/monocoque/devices/serial/moza.h b/src/monocoque/devices/serial/moza.h
index c8281fc..592b3a1 100644
--- a/src/monocoque/devices/serial/moza.h
+++ b/src/monocoque/devices/serial/moza.h
@@ -4,7 +4,7 @@
 #include "../serialdevice.h"
 #include "../simdevice.h"
 
-int moza_update(SerialDevice* serialdevice, unsigned short maxrpm, unsigned short rpm);
+int moza_update(SerialDevice* serialdevice, unsigned short rpm, unsigned short maxrpm);
 int moza_init(SerialDevice* serialdevice, const char* portdev);
 unsigned char moza_checksum(unsigned char *data, unsigned short size);