diff --git a/src/authm_mad/remotes/ldap/ldap_auth.rb b/src/authm_mad/remotes/ldap/ldap_auth.rb
index 209cc5d579..0060028ae8 100644
--- a/src/authm_mad/remotes/ldap/ldap_auth.rb
+++ b/src/authm_mad/remotes/ldap/ldap_auth.rb
@@ -15,7 +15,9 @@
 # ---------------------------------------------------------------------------- #
 
 require 'rubygems'
-require 'opennebula'
+require 'opennebula/xml_utils'
+require 'opennebula/client'
+require 'opennebula/group_pool'
 require 'net/ldap'
 require 'yaml'