diff --git a/htdocs/core/class/html.formmail.class.php b/htdocs/core/class/html.formmail.class.php
index 823e90fcac3..a375a7223a3 100644
--- a/htdocs/core/class/html.formmail.class.php
+++ b/htdocs/core/class/html.formmail.class.php
@@ -157,6 +157,8 @@ class FormMail extends Form
public $lines_model;
+ public $withoptiononeemailperrecipient;
+
/**
* Constructor