diff --git a/htdocs/checkpassword.php b/htdocs/checkpassword.php
index 93ad77b..41c0c33 100644
--- a/htdocs/checkpassword.php
+++ b/htdocs/checkpassword.php
@@ -31,7 +31,7 @@
     $result = $ldap_connection[1];
 
     if ($use_checkpasswordhistory) {
-        $hashed_password_history = $ldapInstance->get_password_history_values($dn, "pwdHistory");
+        $hashed_password_history = $ldapInstance->get_attribute_value($dn, "pwdHistory");
         foreach ($hashed_password_history as $hashed_password) {
             preg_match("/(?<={).*(?=})/", $hashed_password, $algorithm);
             preg_match("/{(?<={).*/", $hashed_password, $password_hash);