diff --git a/fs/ubifs/budget.c b/fs/ubifs/budget.c
index c0b84e960b20c1..bdb79be6dc0e23 100644
--- a/fs/ubifs/budget.c
+++ b/fs/ubifs/budget.c
@@ -403,7 +403,7 @@ static int calc_dd_growth(const struct ubifs_info *c,
 	dd_growth = req->dirtied_page ? c->bi.page_budget : 0;
 
 	if (req->dirtied_ino)
-		dd_growth += c->bi.inode_budget << (req->dirtied_ino - 1);
+		dd_growth += c->bi.inode_budget * req->dirtied_ino;
 	if (req->mod_dent)
 		dd_growth += c->bi.dent_budget;
 	dd_growth += req->dirtied_ino_d;