diff --git a/app/Services/PdfMaker/Design.php b/app/Services/PdfMaker/Design.php
index 99f3eee245e1..32b991d6f8e7 100644
--- a/app/Services/PdfMaker/Design.php
+++ b/app/Services/PdfMaker/Design.php
@@ -305,6 +305,7 @@ class Design extends BaseDesign
         // Some of column can be aliased. This is simple workaround for these.
         $aliases = [
             '$product.product_key' => '$product.item',
+            '$task.product_key' => '$task.service',
         ];
 
         foreach ($this->context['pdf_variables']["{$type}_columns"] as $column) {