diff --git a/lam/lib/modules/posixAccount.inc b/lam/lib/modules/posixAccount.inc
index dbb8e7e9..4bbb73d9 100644
--- a/lam/lib/modules/posixAccount.inc
+++ b/lam/lib/modules/posixAccount.inc
@@ -115,6 +115,8 @@ class posixAccount extends baseModule {
 			$return['dependencies'] = array('depends' => array(), 'conflicts' => array());
 		}
 		elseif ($this->get_scope() == "host") {
+			// LDAP filter
+			$return["ldap_filter"] = array('or' => "(objectClass=posixAccount)");
 			// module dependencies
 			$return['dependencies'] = array('depends' => array(), 'conflicts' => array());
 		}
diff --git a/lam/lib/modules/sambaSamAccount.inc b/lam/lib/modules/sambaSamAccount.inc
index 62ef1ba2..231ab641 100644
--- a/lam/lib/modules/sambaSamAccount.inc
+++ b/lam/lib/modules/sambaSamAccount.inc
@@ -132,6 +132,8 @@ class sambaSamAccount extends baseModule {
 		$return["RDN"] = array("sambaSID" => "low");
 		// module dependencies
 		$return['dependencies'] = array('depends' => array('posixAccount'), 'conflicts' => array());
+		// LDAP filter
+		$return["ldap_filter"] = array('or' => "(objectClass=sambaSamAccount)");
 		// managed object classes
 		$return['objectClasses'] = array('sambaSamAccount');
 		// managed attributes