diff --git a/login/index.php b/login/index.php
index 3ea0675..38f0477 100644
--- a/login/index.php
+++ b/login/index.php
@@ -298,7 +298,7 @@ if (!empty($CFG->alternateloginurl)) {
         $loginurl .= 'errorcode='.$errorcode;
     }
 
-    redirect($loginurl);
+    redirect(new moodle_url($loginurl));
 }
 
 // make sure we really are on the https page when https login required