diff --git a/lib/SP/Providers/Auth/Ldap/LdapActions.php b/lib/SP/Providers/Auth/Ldap/LdapActions.php
index 0f808ce1..e81a9e7e 100644
--- a/lib/SP/Providers/Auth/Ldap/LdapActions.php
+++ b/lib/SP/Providers/Auth/Ldap/LdapActions.php
@@ -252,7 +252,7 @@ final class LdapActions
      * @return array
      * @throws LdapException
      */
-    public function getObjects($filter, array $attributes = self::USER_ATTRIBUTES, $searchBase = false)
+    public function getObjects($filter, array $attributes = self::USER_ATTRIBUTES, $searchBase = null)
     {
         $searchResults = $this->getResults($filter, $attributes, $searchBase);