diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c
index cead918..5a479d6 100644
--- a/drivers/md/raid1.c
+++ b/drivers/md/raid1.c
@@ -1145,7 +1145,7 @@
 		long sectors_to_go = r1_bio->sectors;
 		/* make sure these bits doesn't get cleared. */
 		do {
-			bitmap_end_sync(mddev->bitmap, r1_bio->sector,
+			bitmap_end_sync(mddev->bitmap, s,
 					&sync_blocks, 1);
 			s += sync_blocks;
 			sectors_to_go -= sync_blocks;