diff --git a/src/Symfony/Component/Translation/Tests/DataCollectorTranslatorTest.php b/src/Symfony/Component/Translation/Tests/DataCollectorTranslatorTest.php
index 06f4b20ba6..d3de1e259f 100644
--- a/src/Symfony/Component/Translation/Tests/DataCollectorTranslatorTest.php
+++ b/src/Symfony/Component/Translation/Tests/DataCollectorTranslatorTest.php
@@ -99,6 +99,7 @@ class DataCollectorTranslatorTest extends TestCase
               'id' => 'choice',
               'translation' => 'choice',
               'locale' => 'en',
+              'fallbackLocale' => null,
               'domain' => 'messages',
               'state' => DataCollectorTranslator::MESSAGE_MISSING,
               'parameters' => ['%count%' => 0],