diff --git a/db/routines/vn/procedures/itemShelvingSale_addBySectorCollection.sql b/db/routines/vn/procedures/itemShelvingSale_addBySectorCollection.sql
index c359c7c8d3..26e661d9a9 100644
--- a/db/routines/vn/procedures/itemShelvingSale_addBySectorCollection.sql
+++ b/db/routines/vn/procedures/itemShelvingSale_addBySectorCollection.sql
@@ -12,7 +12,7 @@ BEGIN
 	DECLARE vSaleFk INT;
 	DECLARE vSectorFk INT;
 	DECLARE vSales CURSOR FOR 
-		SELECT s.id
+		SELECT DISTINCT s.id
 			FROM sectorCollectionSaleGroup sc
 				JOIN saleGroupDetail sg ON sg.saleGroupFk = sc.saleGroupFk
 				JOIN sale s ON sg.saleFk = s.id