diff --git a/components/console/helpers/questionhelper.rst b/components/console/helpers/questionhelper.rst
index d6cdb7c67ab..664f1b0d1df 100644
--- a/components/console/helpers/questionhelper.rst
+++ b/components/console/helpers/questionhelper.rst
@@ -384,6 +384,9 @@ You can also use a validator with a hidden question::
         $helper = $this->getHelper('question');
 
         $question = new Question('Please enter your password');
+        $question->setNormalizer(function ($value) {
+            return null === $value ? '' : $value;
+        });
         $question->setValidator(function ($value) {
             if (trim($value) == '') {
                 throw new \Exception('The password cannot be empty');