diff --git a/db/routines/vn/functions/ticket_isOutClosureZone.sql b/db/routines/vn/functions/ticket_isOutClosureZone.sql
index ebddcf505..30589c87a 100644
--- a/db/routines/vn/functions/ticket_isOutClosureZone.sql
+++ b/db/routines/vn/functions/ticket_isOutClosureZone.sql
@@ -9,7 +9,7 @@ BEGIN
  * @param vSelf Ticket id
  * @return true o false
  */
-	DECLARE vIsTicketInTime BOOL;
+	DECLARE vIsTicketInTime BOOL DEFAULT FALSE;
 
 	SELECT TIMEDIFF(CURRENT_TIME(), zc.hour + INTERVAL tc.packingDelay HOUR) > 0 INTO vIsTicketInTime
 		FROM vn.ticket t