diff --git a/drivers/comedi/drivers/rti800.c b/drivers/comedi/drivers/rti800.c
index 1b02e47bdb4c..fa3965cf92f2 100644
--- a/drivers/comedi/drivers/rti800.c
+++ b/drivers/comedi/drivers/rti800.c
@@ -257,7 +257,8 @@ static int rti800_attach(struct comedi_device *dev, struct comedi_devconfig *it)
 	struct comedi_subdevice *s;
 	int ret;
 
-	ret = comedi_request_region(dev, it->options[0], 0x10);
+	ret = comedi_check_request_region(dev, it->options[0], 0x10,
+					  0, 0x3ff, 16);
 	if (ret)
 		return ret;