diff --git a/hook.php b/hook.php
index c28aae8f..7838a324 100644
--- a/hook.php
+++ b/hook.php
@@ -108,7 +108,8 @@ function plugin_uninstall_addUninstallTypes($uninstal_types = []) {
 function plugin_genericobject_install() {
    global $DB;
 
-   include_once(GLPI_ROOT."/plugins/genericobject/inc/object.class.php");
+   include_once(GLPI_ROOT."/plugins/genericobject/inc/baseobject.class.php");
+   include_once(GLPI_ROOT."/files/_plugins/genericobject/inc/object.class.php");
    include_once(GLPI_ROOT."/plugins/genericobject/inc/type.class.php");
 
    $migration = new Migration(PLUGIN_GENERICOBJECT_VERSION);
@@ -155,7 +156,8 @@ function plugin_genericobject_install() {
 function plugin_genericobject_uninstall() {
    global $DB;
 
-   include_once(GLPI_ROOT."/plugins/genericobject/inc/object.class.php");
+   include_once(GLPI_ROOT."/plugins/genericobject/inc/baseobject.class.php");
+   include_once(GLPI_ROOT."/files/_plugins/genericobject/inc/object.class.php");
    include_once(GLPI_ROOT."/plugins/genericobject/inc/type.class.php");
 
    //For each type
diff --git a/inc/object.class.php b/inc/baseobject.class.php
similarity index 99%
rename from inc/object.class.php
rename to inc/baseobject.class.php
index 92849865..8ed756e2 100644
--- a/inc/object.class.php
+++ b/inc/baseobject.class.php
@@ -25,7 +25,7 @@
  @since     2009
  ---------------------------------------------------------------------- */
 
-class PluginGenericobjectObject extends CommonDBTM {
+class PluginGenericobjectBaseObject extends CommonDBTM {
 
    protected $objecttype;
 
diff --git a/objects/object_child.class.tpl b/objects/object_child.class.tpl
new file mode 100644
index 00000000..c0e3ed3e
--- /dev/null
+++ b/objects/object_child.class.tpl
@@ -0,0 +1,34 @@
+<?php
+/*
+ This file is part of the genericobject plugin.
+
+ Genericobject plugin is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ Genericobject plugin 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 Genericobject. If not, see <http://www.gnu.org/licenses/>.
+ --------------------------------------------------------------------------
+ @package   genericobject
+ @author    the genericobject plugin team
+ @copyright Copyright (c) 2010-2011 Order plugin team
+ @license   GPLv2+
+            http://www.gnu.org/licenses/gpl.txt
+ @link      https://forge.indepnet.n$/projects/genericobject
+ @link      http://www.glpi-project.org/
+ @since     2009
+ ---------------------------------------------------------------------- */
+/**
+ * Users may customize this class at their own risk. No technical support for customizations.
+ */
+class PluginGenericobjectObject extends PluginGenericobjectBaseObject {
+   public function __construct() {
+         parent::__construct();
+   }
+}
\ No newline at end of file
diff --git a/setup.php b/setup.php
index e2ac0506..14e7626e 100644
--- a/setup.php
+++ b/setup.php
@@ -99,6 +99,25 @@
 if (file_exists(GENERICOBJECT_DIR . "/log_filter.settings.php")) {
    include_once(GENERICOBJECT_DIR . "/log_filter.settings.php");
 }
+// Backward compatible solution for allowing users to extend core plugin classes.
+// All file paths are absolute.
+// These are the only core classes that can be extended by users.
+// REM: Should happen before autoloader initialization.
+$child_classes = [
+   [
+      'class_name' => 'PluginGenericobjectObject',
+      'child_path' => GENERICOBJECT_CLASS_PATH.'/object.class.php',
+      'template_path' => GENERICOBJECT_DIR.'/objects/object_child.class.tpl',
+    ],
+];
+foreach ($child_classes as $config) {
+   if (! file_exists($config['child_path'])) {
+      file_put_contents(
+         $config['child_path'],
+         file_get_contents($config['template_path'])
+      );
+   }
+}
 
 $go_autoloader = new PluginGenericobjectAutoloader([
    GENERICOBJECT_CLASS_PATH