diff --git a/src/Symfony/Component/Form/Tests/Extension/Core/DataTransformer/IntegerToLocalizedStringTransformerTest.php b/src/Symfony/Component/Form/Tests/Extension/Core/DataTransformer/IntegerToLocalizedStringTransformerTest.php
index c51132518b..3295e3d85f 100644
--- a/src/Symfony/Component/Form/Tests/Extension/Core/DataTransformer/IntegerToLocalizedStringTransformerTest.php
+++ b/src/Symfony/Component/Form/Tests/Extension/Core/DataTransformer/IntegerToLocalizedStringTransformerTest.php
@@ -108,10 +108,10 @@ class IntegerToLocalizedStringTransformerTest extends \PHPUnit_Framework_TestCas
 
     public function testReverseTransformWithGrouping()
     {
-        // Since we test against "de_AT", we need the full implementation
+        // Since we test against "de_DE", we need the full implementation
         IntlTestHelper::requireFullIntl($this);
 
-        \Locale::setDefault('de_AT');
+        \Locale::setDefault('de_DE');
 
         $transformer = new IntegerToLocalizedStringTransformer(null, true);
 
diff --git a/src/Symfony/Component/Form/Tests/Extension/Core/DataTransformer/NumberToLocalizedStringTransformerTest.php b/src/Symfony/Component/Form/Tests/Extension/Core/DataTransformer/NumberToLocalizedStringTransformerTest.php
index 2ea4e9dd2a..ab58d3685d 100644
--- a/src/Symfony/Component/Form/Tests/Extension/Core/DataTransformer/NumberToLocalizedStringTransformerTest.php
+++ b/src/Symfony/Component/Form/Tests/Extension/Core/DataTransformer/NumberToLocalizedStringTransformerTest.php
@@ -54,8 +54,8 @@ class NumberToLocalizedStringTransformerTest extends \PHPUnit_Framework_TestCase
     public function provideTransformationsWithGrouping()
     {
         return array(
-            array(1234.5, '1.234,5', 'de_AT'),
-            array(12345.912, '12.345,912', 'de_AT'),
+            array(1234.5, '1.234,5', 'de_DE'),
+            array(12345.912, '12.345,912', 'de_DE'),
             array(1234.5, '1 234,5', 'fr'),
             array(1234.5, '1 234,5', 'ru'),
             array(1234.5, '1 234,5', 'fi'),
@@ -393,10 +393,10 @@ class NumberToLocalizedStringTransformerTest extends \PHPUnit_Framework_TestCase
      */
     public function testDecimalSeparatorMayNotBeDotIfGroupingSeparatorIsDot()
     {
-        // Since we test against "de_AT", we need the full implementation
+        // Since we test against "de_DE", we need the full implementation
         IntlTestHelper::requireFullIntl($this);
 
-        \Locale::setDefault('de_AT');
+        \Locale::setDefault('de_DE');
 
         $transformer = new NumberToLocalizedStringTransformer(null, true);
 
@@ -408,10 +408,10 @@ class NumberToLocalizedStringTransformerTest extends \PHPUnit_Framework_TestCase
      */
     public function testDecimalSeparatorMayNotBeDotIfGroupingSeparatorIsDotWithNoGroupSep()
     {
-        // Since we test against "de_AT", we need the full implementation
+        // Since we test against "de_DE", we need the full implementation
         IntlTestHelper::requireFullIntl($this);
 
-        \Locale::setDefault('de_AT');
+        \Locale::setDefault('de_DE');
 
         $transformer = new NumberToLocalizedStringTransformer(null, true);