diff --git a/auth/ldap/auth.php b/auth/ldap/auth.php
index 7b39daf3628..96d9bbaf23d 100644
--- a/auth/ldap/auth.php
+++ b/auth/ldap/auth.php
@@ -1686,7 +1686,7 @@ class auth_plugin_ldap extends auth_plugin_base {
         // we don't want to use at all. As we can't get rid of it, just point
         // $SESSION->wantsurl to $CFG->wwwroot (after all, we came from there).
         if (empty($SESSION->wantsurl)
-            && (get_referer() == $CFG->httpswwwroot.'/auth/ldap/ntlmsso_finish.php')) {
+            && (get_local_referer() == $CFG->httpswwwroot.'/auth/ldap/ntlmsso_finish.php')) {
 
             $SESSION->wantsurl = $CFG->wwwroot;
         }