*\r
* \param[in] channel MIDI channel number to address\r
*/\r
- #define MIDI_CHANNEL(channel) (channel - 1)\r
+ #define MIDI_CHANNEL(channel) ((channel) - 1)\r
\r
/** LED mask for the library LED driver, to indicate that the USB interface is not ready. */\r
#define LEDMASK_USB_NOTREADY LEDS_LED1\r