diff --git a/src/includes/class/class.LSformRule_rlcMemberDetails.php b/src/includes/class/class.LSformRule_rlcMemberDetails.php
deleted file mode 100644
index 6925918e..00000000
--- a/src/includes/class/class.LSformRule_rlcMemberDetails.php
+++ /dev/null
@@ -1,86 +0,0 @@
-<?php
-/*******************************************************************************
- * Copyright (C) 2007 Easter-eggs
- * https://ldapsaisie.org
- *
- * Author: See AUTHORS file in top-level directory.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License version 2
- * as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
-
-******************************************************************************/
-
-/**
- * LSformRule to check rlcMemberDetails attribute value
- *
- * @author Benjamin Renard <brenard@easter-eggs.com>
- */
-class LSformRule_rlcMemberDetails extends LSformRule {
-
-  // Validate values one by one or all together
-  public const validate_one_by_one = False;
-
-  /**
-   * Validate rlcMemberDetails attribute value
-   *
-   * @param string $values The value to validate
-   * @param array $options Validation options
-   * @param object $formElement The related formElement object
-   *
-   * @return boolean true if the value is valide, false if not
-   */
-  public static function validate($value, $options=array(), &$formElement) {
-    $members = array();
-    foreach($value as $json_value) {
-      if (is_empty($json_value)) {
-        self :: log_error("validate($json_value): Empty value are not authorized");
-        return false;
-      }
-      $v = json_decode($json_value);
-      if (is_null($v)) {
-        self :: log_error("validate($json_value): fail to decode JSON value");
-        return false;
-      }
-
-      if (!isset($v->role) || is_empty($v->role) || !isset($v->uid) || is_empty($v->uid)) {
-        self :: log_error("validate($json_value): invalid value (no uid or role)");
-        return false;
-      }
-
-      if (!in_array($v->role, array('facilitator', 'governing_board_referent', 'contributor', 'observer'))) {
-        self :: log_error("validate($json_value): invalid role $v->role");
-        return false;
-      }
-
-      if (!array_key_exists($v->role, $members))
-        $members[$v->role] = array();
-      if (in_array($v->uid, $members[$v->role])) {
-        self :: log_error("validate($json_value): member $v->uid duplicated as $v->role");
-        return false;
-      }
-      $members[$v->role][] = $v->uid;
-    }
-    self :: log_debug("validate(): members: ".print_r($members, true));
-    foreach (array('facilitator', 'governing_board_referent', 'contributor') as $role) {
-      if (!array_key_exists($role, $members)) {
-        self :: log_error("validate(): no $role");
-        return false;
-      }
-    }
-    if (count($members['governing_board_referent']) > 1) {
-      self :: log_error("validate(): more than one governing_board_referent found");
-      return false;
-    }
-    return True;
-  }
-}