diff --git a/review/simpletest/pifr_simpletest.client.inc b/review/simpletest/pifr_simpletest.client.inc
index 9256f49..5072661 100644
--- a/review/simpletest/pifr_simpletest.client.inc
+++ b/review/simpletest/pifr_simpletest.client.inc
@@ -29,6 +29,13 @@ class pifr_client_review_pifr_simpletest extends pifr_client_review_pifr_drupal
     // that verbose mode is disabled.
     $this->arguments['drupal.variables'][] = 'simpletest_clear_results:0';
     $this->arguments['drupal.variables'][] = 'simpletest_verbose:0';
+    // In Drupal 8, use the config system.
+    if ($this->arguments['drupal.core.version'] >= 8) {
+      config('simpletest.settings')
+        ->set('clear_results', '0')
+        ->set('verbose', '0')
+        ->save();
+    }
   }
 
   /**