diff --git a/src/Symfony/Component/Console/Helper/QuestionHelper.php b/src/Symfony/Component/Console/Helper/QuestionHelper.php
index 9c200fe897ea9..2cd2adb5fe45c 100644
--- a/src/Symfony/Component/Console/Helper/QuestionHelper.php
+++ b/src/Symfony/Component/Console/Helper/QuestionHelper.php
@@ -49,7 +49,13 @@ public function ask(InputInterface $input, OutputInterface $output, Question $qu
if (!$input->isInteractive()) {
$default = $question->getDefault();
- if (null !== $default && $question instanceof ChoiceQuestion) {
+ if (null === $default) {
+ return $default;
+ }
+
+ if ($validator = $question->getValidator()) {
+ return \call_user_func($question->getValidator(), $default);
+ } elseif ($question instanceof ChoiceQuestion) {
$choices = $question->getChoices();
if (!$question->isMultiselect()) {
diff --git a/src/Symfony/Component/Console/Tests/Helper/QuestionHelperTest.php b/src/Symfony/Component/Console/Tests/Helper/QuestionHelperTest.php
index 46cfe8184278d..56ba1c6891322 100644
--- a/src/Symfony/Component/Console/Tests/Helper/QuestionHelperTest.php
+++ b/src/Symfony/Component/Console/Tests/Helper/QuestionHelperTest.php
@@ -137,6 +137,9 @@ public function testAskChoiceNonInteractive()
$question->setMultiselect(true);
$this->assertNull($questionHelper->ask($this->createStreamableInputInterfaceMock($inputStream, false), $this->createOutputInterface(), $question));
+ $question = new ChoiceQuestion('Who are your favorite superheros?', ['a' => 'Batman', 'b' => 'Superman'], 'a');
+ $this->assertSame('a', $questionHelper->ask($this->createStreamableInputInterfaceMock('', false), $this->createOutputInterface(), $question), 'ChoiceQuestion validator returns the key if it\'s a string');
+
try {
$question = new ChoiceQuestion('Who are your favorite superheros?', $heroes, '');
$question->setMultiselect(true);
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