diff --git a/src/lib/models/discount.php b/src/lib/models/discount.php
index c4ae1a9..2b56c64 100644
--- a/src/lib/models/discount.php
+++ b/src/lib/models/discount.php
@@ -164,7 +164,8 @@ class discount extends \db
                 'start_date' => $data['start_date'],
                 'end_date' => $data['end_date'],
                 'status' => $data['status'],
-                'group_ids' => $data['group_ids']
+                'group_ids' => !empty($data['group_ids']) ? '{'. implode(', ', $data['group_ids']) . '}' : null,
+                'catalog_ids' => !empty($data['catalog_ids']) ? '{'. implode(', ', $data['catalog_ids']) . '}' : null
             ],
             -1
         );
--
libgit2 0.21.4