diff -u b/masquerade.module b/masquerade.module
--- b/masquerade.module
+++ b/masquerade.module
@@ -708,7 +708,7 @@
     drupal_access_denied();
   }
   else {
-    $form_state['redirect'] = ($_SERVER['HTTP_REFERER']);
+    $form_state['redirect'] = $_SERVER['HTTP_REFERER'];
   }
 }