diff --git a/core/tests/Drupal/Tests/Listeners/SimpletestUiPrinter.php b/core/tests/Drupal/Tests/Listeners/SimpletestUiPrinter.php
index 8c8e1b1..78017e8 100644
--- a/core/tests/Drupal/Tests/Listeners/SimpletestUiPrinter.php
+++ b/core/tests/Drupal/Tests/Listeners/SimpletestUiPrinter.php
@@ -21,6 +21,8 @@ public function write($buffer) {
     $buffer = nl2br($buffer);
 
     print $buffer;
+    //@todo remove this
+    print " in SimpletestUiPrinter\n";
   }
 
 }