diff --git a/auth/ldap/auth.php b/auth/ldap/auth.php
index 8461b3531cb6f..d054808317e40 100644
--- a/auth/ldap/auth.php
+++ b/auth/ldap/auth.php
@@ -85,6 +85,10 @@ function user_login($username, $password) {
             return false;
         }
 
+        $textlib = textlib_get_instance();
+        $extusername = $textlib->convert(stripslashes($username), 'utf-8', $this->config->ldapencoding);
+        $extpassword = $textlib->convert(stripslashes($password), 'utf-8', $this->config->ldapencoding);
+
         //
         // Before we connect to LDAP, check if this is an AD SSO login
         // if we succeed in this block, we'll return success early.
@@ -125,10 +129,6 @@ function user_login($username, $password) {
         unset($key);
 
 
-        $textlib = textlib_get_instance();
-        $extusername = $textlib->convert(stripslashes($username), 'utf-8', $this->config->ldapencoding);
-        $extpassword = $textlib->convert(stripslashes($password), 'utf-8', $this->config->ldapencoding);
-
         $ldapconnection = $this->ldap_connect();
 
         if ($ldapconnection) {