diff --git a/workflow/engine/controllers/installer.php b/workflow/engine/controllers/installer.php
index f491122f4..a683ab8d2 100755
--- a/workflow/engine/controllers/installer.php
+++ b/workflow/engine/controllers/installer.php
@@ -1495,6 +1495,12 @@ class Installer extends Controller
          * Active plugins to enterprise
          */
 
+        if (!defined("PATH_PM_ENTERPRISE")) {
+            define("PATH_PM_ENTERPRISE", PATH_CORE . "/plugins/enterprise/");
+        }
+        set_include_path(PATH_PM_ENTERPRISE . PATH_SEPARATOR . get_include_path());
+        require_once ('classes/model/AddonsManager.php');
+
         $plugins = glob(PATH_CORE."plugins/*.php");
         foreach ($plugins as $value) {
             $dataPlugin = pathinfo($value);