diff --git a/REST/functions.php b/REST/functions.php
index cee3c181..929d9f3a 100644
--- a/REST/functions.php
+++ b/REST/functions.php
@@ -607,7 +607,7 @@ SELECT
     es.delivery_date,
     es.send_date
 FROM ecmsaleitems AS i
-JOIN ecmsales AS es
+INNER JOIN ecmsales AS es
       ON es.id = i.ecmsale_id
 WHERE es.status IN ('s20','s30')
   AND es.deleted = 0