diff --git a/htdocs/html.form.class.php b/htdocs/html.form.class.php
index af67f6a3850..96ab6c5b964 100644
--- a/htdocs/html.form.class.php
+++ b/htdocs/html.form.class.php
@@ -996,6 +996,8 @@ class Form
     {
         global $langs;
     
+        if (! $code) return '';
+        
         $sql = "SELECT libelle FROM ".MAIN_DB_PREFIX."c_forme_juridique";
         $sql.= " WHERE code='$code';";