diff --git a/db/routines/vn/procedures/ticket_doSelfConsumptionPackaging.sql b/db/routines/vn/procedures/ticket_doSelfConsumptionPackaging.sql
index 3ccb04726b..93eb7a45f9 100644
--- a/db/routines/vn/procedures/ticket_doSelfConsumptionPackaging.sql
+++ b/db/routines/vn/procedures/ticket_doSelfConsumptionPackaging.sql
@@ -54,7 +54,7 @@ proc: BEGIN
 			WHERE itemFk = vItemFk
 				AND ticketFk = vTicketFk;
 
-		IF vSaleFk NOT IS NULL THEN
+		IF vSaleFk IS NOT NULL THEN
 			UPDATE sale
 				SET quantity = quantity + 1
 				WHERE id = vSaleFk;