diff --git a/drivers/lightnvm/pblk-init.c b/drivers/lightnvm/pblk-init.c
index 3c37491860537f11c397dda2dc5932a7231c7d6d..c7239c41ba40f55bdad0d00a156375672d993b5b 100644
--- a/drivers/lightnvm/pblk-init.c
+++ b/drivers/lightnvm/pblk-init.c
@@ -710,7 +710,7 @@ static int pblk_lines_init(struct pblk *pblk)
 		goto add_emeta_page;
 	}
 
-	lm->emeta_bb = geo->nr_luns - i;
+	lm->emeta_bb = geo->nr_luns > i ? geo->nr_luns - i : 0;
 
 	lm->min_blk_line = 1;
 	if (geo->nr_luns > 1)