diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index 337b92a..02cb6f0 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -750,9 +750,9 @@
 	__rq_for_each_bio(_iter.bio, _rq)			\
 		bio_for_each_segment(bvl, _iter.bio, _iter.iter)
 
-#define rq_iter_last(rq, _iter)					\
+#define rq_iter_last(bvec, _iter)				\
 		(_iter.bio->bi_next == NULL &&			\
-		 bio_iter_last(_iter.bio, _iter.iter))
+		 bio_iter_last(bvec, _iter.iter))
 
 #ifndef ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE
 # error	"You should define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE for your platform"