diff --git a/app/Classes/General/Eloquent/Filters/PackingListOrderedByInvoiceDate.php b/app/Classes/General/Eloquent/Filters/PackingListOrderedByInvoiceDate.php
index 4f7c5654..5ebdb040 100644
--- a/app/Classes/General/Eloquent/Filters/PackingListOrderedByInvoiceDate.php
+++ b/app/Classes/General/Eloquent/Filters/PackingListOrderedByInvoiceDate.php
@@ -21,7 +21,7 @@ class PackingListOrderedByInvoiceDate implements Filter
     {
         return $builder->join('transactions', function($join){
             $join->on('transactions.owner_id', '=', 'packing_lists.id');
-            $join->on('transactions.owner_type', '=', PackingList::class);
+            $join->on('transactions.owner_type', '=', 'App\\Models\\PackingList');
             $join->on('transactions.status', '=', ApprovalStatus::APPROVED);
         })->orderBy('transactions.updated_at')->get();
     }