diff --git a/app/Mail/Engine/QuoteEmailEngine.php b/app/Mail/Engine/QuoteEmailEngine.php
index 9aef5001571d..af74cb93fc4f 100644
--- a/app/Mail/Engine/QuoteEmailEngine.php
+++ b/app/Mail/Engine/QuoteEmailEngine.php
@@ -89,7 +89,7 @@ class QuoteEmailEngine extends BaseEmailEngine
             ->setViewText(ctrans('texts.view_quote'));
 
         if ($this->client->getSetting('pdf_email_attachment') !== false) {
-            $this->setAttachments($invitation->pdf_file_path());
+            $this->setAttachments($this->invitation->pdf_file_path());
         }
 
         return $this;