diff --git a/htdocs/core/class/html.form.class.php b/htdocs/core/class/html.form.class.php
index c38edb71365..518d3a02308 100644
--- a/htdocs/core/class/html.form.class.php
+++ b/htdocs/core/class/html.form.class.php
@@ -708,7 +708,8 @@ class Form
             $i = 0;
             if ($num)
             {
-                $contactstatic=new Contact($this->db);
+            	include_once(DOL_DOCUMENT_ROOT.'/contact/class/contact.class.php');
+            	$contactstatic=new Contact($this->db);
 
                 while ($i < $num)
                 {