diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index 31867de882132..97c89c0c1398f 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -1275,7 +1275,7 @@ static inline unsigned int queue_io_opt(const struct request_queue *q)
 	return q->limits.io_opt;
 }
 
-static inline int bdev_io_opt(struct block_device *bdev)
+static inline unsigned int bdev_io_opt(struct block_device *bdev)
 {
 	return queue_io_opt(bdev_get_queue(bdev));
 }