diff --git a/drivers/staging/comedi/drivers/das16.c b/drivers/staging/comedi/drivers/das16.c
index 222a32ff0d32..5d47d0a1d45f 100644
--- a/drivers/staging/comedi/drivers/das16.c
+++ b/drivers/staging/comedi/drivers/das16.c
@@ -764,7 +764,7 @@ static int das16_cmd_exec(struct comedi_device *dev, struct comedi_subdevice *s)
 		return -1;
 	}
 
-	devpriv->adc_byte_count = cmd->stop_arg * cfc_bytes_per_scan(s);
+	devpriv->adc_byte_count = cmd->stop_arg * comedi_bytes_per_scan(s);
 
 	if (devpriv->can_burst)
 		outb(DAS1600_CONV_DISABLE, dev->iobase + DAS1600_CONV_REG);