diff --git a/src/Symfony/Component/Console/Question/ChoiceQuestion.php b/src/Symfony/Component/Console/Question/ChoiceQuestion.php
index ce4ff67779e7..9586c5bf3ac0 100644
--- a/src/Symfony/Component/Console/Question/ChoiceQuestion.php
+++ b/src/Symfony/Component/Console/Question/ChoiceQuestion.php
@@ -149,19 +149,19 @@ private function getDefaultValidator()
                 $result = array_search($value, $choices);
 
                 if (!$isAssoc) {
-                    if (!empty($result)) {
+                    if (false !== $result) {
                         $result = $choices[$result];
                     } elseif (isset($choices[$value])) {
                         $result = $choices[$value];
                     }
-                } elseif (empty($result) && array_key_exists($value, $choices)) {
+                } elseif (false === $result && isset($choices[$value])) {
                     $result = $value;
                 }
 
-                if (empty($result)) {
+                if (false === $result) {
                     throw new \InvalidArgumentException(sprintf($errorMessage, $value));
                 }
-                array_push($multiselectChoices, $result);
+                array_push($multiselectChoices, (string) $result);
             }
 
             if ($multiselect) {
diff --git a/src/Symfony/Component/Console/Tests/Helper/QuestionHelperTest.php b/src/Symfony/Component/Console/Tests/Helper/QuestionHelperTest.php
index ccd889b0aa24..be872a9d52c1 100644
--- a/src/Symfony/Component/Console/Tests/Helper/QuestionHelperTest.php
+++ b/src/Symfony/Component/Console/Tests/Helper/QuestionHelperTest.php
@@ -210,6 +210,76 @@ public function testAskAndValidate()
         }
     }
 
+    /**
+     * @dataProvider simpleAnswerProvider
+     */
+    public function testSelectChoiceFromSimpleChoices($providedAnswer, $expectedValue)
+    {
+        $possibleChoices = array(
+            'My environment 1',
+            'My environment 2',
+            'My environment 3',
+        );
+
+        $dialog = new QuestionHelper();
+        $dialog->setInputStream($this->getInputStream($providedAnswer."\n"));
+        $helperSet = new HelperSet(array(new FormatterHelper()));
+        $dialog->setHelperSet($helperSet);
+
+        $question = new ChoiceQuestion('Please select the environment to load', $possibleChoices);
+        $answer = $dialog->ask($this->createInputInterfaceMock(), $this->createOutputInterface(), $question);
+
+        $this->assertSame($expectedValue, $answer);
+    }
+
+    public function simpleAnswerProvider()
+    {
+        return array(
+            array(0, 'My environment 1'),
+            array(1, 'My environment 2'),
+            array(2, 'My environment 3'),
+            array('My environment 1', 'My environment 1'),
+            array('My environment 2', 'My environment 2'),
+            array('My environment 3', 'My environment 3'),
+        );
+    }
+
+    /**
+     * @dataProvider mixedKeysChoiceListAnswerProvider
+     */
+    public function testChoiceFromChoicelistWithMixedKeys($providedAnswer, $expectedValue)
+    {
+        $possibleChoices = array(
+            '0' => 'No environment',
+            '1' => 'My environment 1',
+            'env_2' => 'My environment 2',
+            3 => 'My environment 3',
+        );
+
+        $dialog = new QuestionHelper();
+        $dialog->setInputStream($this->getInputStream($providedAnswer."\n"));
+        $helperSet = new HelperSet(array(new FormatterHelper()));
+        $dialog->setHelperSet($helperSet);
+
+        $question = new ChoiceQuestion('Please select the environment to load', $possibleChoices);
+        $question->setMaxAttempts(1);
+        $answer = $dialog->ask($this->createInputInterfaceMock(), $this->createOutputInterface(), $question);
+
+        $this->assertSame($expectedValue, $answer);
+    }
+
+    public function mixedKeysChoiceListAnswerProvider()
+    {
+        return array(
+            array('0', '0'),
+            array('No environment', '0'),
+            array('1', '1'),
+            array('env_2', 'env_2'),
+            array(3, '3'),
+            array('My environment 1', '1'),
+        );
+    }
+
     /**
      * @dataProvider answerProvider
      */
@@ -227,6 +297,7 @@ public function testSelectChoiceFromChoiceList($providedAnswer, $expectedValue)
         $dialog->setHelperSet($helperSet);
 
         $question = new ChoiceQuestion('Please select the environment to load', $possibleChoices);
+        $question->setMaxAttempts(1);
         $answer = $dialog->ask($this->createInputInterfaceMock(), $this->createOutputInterface(), $question);
 
         $this->assertSame($expectedValue, $answer);

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