diff --git a/block/blk-core.c b/block/blk-core.c
index 7369eee..c8303e9 100644
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -1122,6 +1122,7 @@
 	req->ioprio = ioprio_best(req->ioprio, bio_prio(bio));
 
 	drive_stat_acct(req, 0);
+	elv_bio_merged(q, req, bio);
 	return true;
 }
 
@@ -1155,6 +1156,7 @@
 	req->ioprio = ioprio_best(req->ioprio, bio_prio(bio));
 
 	drive_stat_acct(req, 0);
+	elv_bio_merged(q, req, bio);
 	return true;
 }