diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c
index 61fdaf0..88de771 100644
--- a/drivers/scsi/scsi_lib.c
+++ b/drivers/scsi/scsi_lib.c
@@ -785,7 +785,7 @@
 		 * end-of-list
 		 */
 		if (!left)
-			sg_mark_end(sgl, this);
+			sg_mark_end(&sgl[this - 1]);
 
 		/*
 		 * don't allow subsequent mempool allocs to sleep, it would