diff --git a/drivers/staging/comedi/drivers/s526.c b/drivers/staging/comedi/drivers/s526.c
index ba485f106c1e..085cf5b449e5 100644
--- a/drivers/staging/comedi/drivers/s526.c
+++ b/drivers/staging/comedi/drivers/s526.c
@@ -400,7 +400,7 @@ static int s526_gpct_winsn(struct comedi_device *dev,
 		if ((data[1] <= data[0]) || !data[0])
 			return -EINVAL;
 		/* to write the PULSE_WIDTH */
-		/* fall through */
+		fallthrough;
 	case INSN_CONFIG_GPCT_QUADRATURE_ENCODER:
 	case INSN_CONFIG_GPCT_SINGLE_PULSE_GENERATOR:
 		s526_gpct_write(dev, chan, data[0]);