diff --git a/htdocs/core/class/notify.class.php b/htdocs/core/class/notify.class.php
index 452d066886e..e66b378ca38 100644
--- a/htdocs/core/class/notify.class.php
+++ b/htdocs/core/class/notify.class.php
@@ -615,7 +615,7 @@ class Notify
 
 						$ref = dol_sanitizeFileName($newref);
 						$pdf_path = $dir_output."/".$ref.".pdf";
-						if (!dol_is_file($pdf_path)) {
+						if (!dol_is_file($pdf_path)||!$arraydefaultmessage->joinfiles) {
 							// We can't add PDF as it is not generated yet.
 							$filepdf = '';
 						} else {