diff --git a/db/routines/vn/procedures/item_getBalance.sql b/db/routines/vn/procedures/item_getBalance.sql
index a68724eb50..580e78a83e 100644
--- a/db/routines/vn/procedures/item_getBalance.sql
+++ b/db/routines/vn/procedures/item_getBalance.sql
@@ -99,7 +99,7 @@ BEGIN
 		),
 		sales AS (
 			WITH itemSales AS (
-				SELECT DATE(t.shipped) + INTERVAL HOUR(z.`hour`) HOUR shipped,
+                SELECT DATE(t.shipped) + INTERVAL HOUR(IFNULL(z.`hour`,0)) HOUR shipped,
 						s.quantity,
 						st2.alertLevel,
 						st2.name,
@@ -114,7 +114,7 @@ BEGIN
 						cb.claimFk
 					FROM vn.sale s
 						JOIN vn.ticket t ON t.id = s.ticketFk
-						JOIN vn.`zone` z ON z.id = t.zoneFk
+						LEFT JOIN vn.`zone` z ON z.id = t.zoneFk
 						LEFT JOIN vn.ticketState ts ON ts.ticketFk = t.id
 						LEFT JOIN vn.state st ON st.code = ts.code
 						JOIN vn.client c ON c.id = t.clientFk