Coccinelle proposes the following patch: --- cpu/nrf52/periph/pdm.c +++ cpu/nrf52/periph/pdm.c @@ -26,7 +26,7 @@ #include "periph/gpio.h" #include "periph/pdm.h" -#define ENABLE_DEBUG (0) +#define ENABLE_DEBUG 0 #include "debug.h" /* The samples buffer is a double buffer */