diff --git a/htdocs/admin/droitpret.php b/htdocs/admin/droitpret.php
index 3a7f2ba3e67..4108424322c 100644
--- a/htdocs/admin/droitpret.php
+++ b/htdocs/admin/droitpret.php
@@ -30,6 +30,7 @@ require("./pre.inc.php");
 require_once(DOL_DOCUMENT_ROOT."/categories/categorie.class.php");
 
 $langs->load("admin");
+$langs->load("categories");
 
 if (!$user->admin)
   accessforbidden();
diff --git a/htdocs/html.form.class.php b/htdocs/html.form.class.php
index 4c36e5621b5..472aee478d9 100644
--- a/htdocs/html.form.class.php
+++ b/htdocs/html.form.class.php
@@ -1488,7 +1488,7 @@ class Form
 		$cat = new Categorie ($this -> db);
 		$cate_arbo = $cat->get_full_arbo($type);
 
-		$output = '<select name="'.$select_name.'">';
+		$output = '<select class="flat" name="'.$select_name.'">';
 		$output.= '<option value="-1" id="choix" disabled="disabled">'.$langs->trans("NoCategoriesDefined").'</option>';
 		
 		if ($cate_arbo)