diff -u b/core/includes/install.core.inc b/core/includes/install.core.inc
--- b/core/includes/install.core.inc
+++ b/core/includes/install.core.inc
@@ -2179,9 +2179,13 @@
   $snapshot = \Drupal::service('config.storage.snapshot');
   config_import_create_snapshot($active, $snapshot);
 
+  // @todo Temporary hack to satisfy PIFR.
+  // @see https://drupal.org/node/1317548
+  $pifr_assertion = '<span style="display:hidden">Drupal installation complete</span>';
+
   drupal_set_message(t('Congratulations, you installed @drupal!', array(
     '@drupal' => drupal_install_profile_distribution_name(),
-  )));
+  )) . $pifr_assertion);
 }
 
 /**