diff --git a/db/routines/vn/procedures/item_getSimilar.sql b/db/routines/vn/procedures/item_getSimilar.sql
index 65407c2df..0bc84f8c0 100644
--- a/db/routines/vn/procedures/item_getSimilar.sql
+++ b/db/routines/vn/procedures/item_getSimilar.sql
@@ -65,7 +65,7 @@ BEGIN
 			iss.visible located,
 			b.price2
 		FROM vn.item i
-			JOIN cache.available a FORCE INDEX (calc_id) ON a.item_id = i.id
+			JOIN cache.available a FORCE INDEX (calc_id_4) ON a.item_id = i.id
 				AND a.calc_id = vCalcFk
 			LEFT JOIN vn.itemProposal ip ON ip.mateFk = i.id
 				AND ip.itemFk = vSelf