diff --git a/src/Symfony/Component/Validator/ConstraintValidator.php b/src/Symfony/Component/Validator/ConstraintValidator.php
index 3aaf806cc2..ac6a64dc37 100644
--- a/src/Symfony/Component/Validator/ConstraintValidator.php
+++ b/src/Symfony/Component/Validator/ConstraintValidator.php
@@ -96,4 +96,21 @@ abstract class ConstraintValidator implements ConstraintValidatorInterface
 
         return (string) $value;
     }
+
+    /**
+     * Returns a string representation of a list of values.
+     *
+     * @param array   $values
+     * @param Boolean $formatDates
+     *
+     * @return string
+     */
+    protected function valuesToString(array $values, $formatDates = false)
+    {
+        foreach ($values as $key => $value) {
+            $values[$key] = $this->valueToString($value, $formatDates);
+        }
+
+        return implode(', ', $values);
+    }
 }
diff --git a/src/Symfony/Component/Validator/Constraints/FileValidator.php b/src/Symfony/Component/Validator/Constraints/FileValidator.php
index dce0480a0e..24e64f9ee9 100644
--- a/src/Symfony/Component/Validator/Constraints/FileValidator.php
+++ b/src/Symfony/Component/Validator/Constraints/FileValidator.php
@@ -161,8 +161,8 @@ class FileValidator extends ConstraintValidator
 
             if (false === $valid) {
                 $this->context->addViolation($constraint->mimeTypesMessage, array(
-                    '{{ type }}' => '"'.$mime.'"',
-                    '{{ types }}' => '"'.implode('", "', $mimeTypes) .'"',
+                    '{{ type }}' => $this->valueToString($mime),
+                    '{{ types }}' => $this->valuesToString($mimeTypes),
                     '{{ file }}' => $path,
                 ));
             }
diff --git a/src/Symfony/Component/Validator/Tests/Constraints/AbstractComparisonValidatorTestCase.php b/src/Symfony/Component/Validator/Tests/Constraints/AbstractComparisonValidatorTestCase.php
index c0ab0f7a53..80690d29e0 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/AbstractComparisonValidatorTestCase.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/AbstractComparisonValidatorTestCase.php
@@ -11,6 +11,7 @@
 
 namespace Symfony\Component\Validator\Tests\Constraints;
 
+use Symfony\Component\Intl\Util\IntlTestHelper;
 use Symfony\Component\Validator\Constraint;
 use Symfony\Component\Validator\Constraints\AbstractComparisonValidator;
 
@@ -73,12 +74,19 @@ abstract class AbstractComparisonValidatorTestCase extends \PHPUnit_Framework_Te
     /**
      * @dataProvider provideInvalidComparisons
      * @param mixed  $dirtyValue
+     * @param mixed  $dirtyValueAsString
      * @param mixed  $comparedValue
      * @param mixed  $comparedValueString
      * @param string $comparedValueType
      */
     public function testInvalidComparisonToValue($dirtyValue, $dirtyValueAsString, $comparedValue, $comparedValueString, $comparedValueType)
     {
+        // Conversion of dates to string differs between ICU versions
+        // Make sure we have the correct version loaded
+        if ($dirtyValue instanceof \DateTime) {
+            IntlTestHelper::requireIntl($this);
+        }
+
         $constraint = $this->createConstraint(array('value' => $comparedValue));
         $constraint->message = 'Constraint Message';
 
diff --git a/src/Symfony/Component/Validator/Tests/Constraints/EqualToValidatorTest.php b/src/Symfony/Component/Validator/Tests/Constraints/EqualToValidatorTest.php
index 2cc624e7f3..783e5508d7 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/EqualToValidatorTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/EqualToValidatorTest.php
@@ -51,7 +51,7 @@ class EqualToValidatorTest extends AbstractComparisonValidatorTestCase
         return array(
             array(1, '1', 2, '2', 'integer'),
             array('22', '"22"', '333', '"333"', 'string'),
-            array(new \DateTime('2001-01-01'), 'Jan 1, 2001 12:00 AM', new \DateTime('2000-01-01'), 'Jan 1, 2000 12:00 AM', 'DateTime')
+            array(new \DateTime('2001-01-01'), 'Jan 1, 2001, 12:00 AM', new \DateTime('2000-01-01'), 'Jan 1, 2000, 12:00 AM', 'DateTime')
         );
     }
 }
diff --git a/src/Symfony/Component/Validator/Tests/Constraints/GreaterThanOrEqualValidatorTest.php b/src/Symfony/Component/Validator/Tests/Constraints/GreaterThanOrEqualValidatorTest.php
index 8dd27f7f4b..bb90f7c283 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/GreaterThanOrEqualValidatorTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/GreaterThanOrEqualValidatorTest.php
@@ -52,7 +52,7 @@ class GreaterThanOrEqualValidatorTest extends AbstractComparisonValidatorTestCas
     {
         return array(
             array(1, '1', 2, '2', 'integer'),
-            array(new \DateTime('2000/01/01'), 'Jan 1, 2000 12:00 AM', new \DateTime('2005/01/01'), 'Jan 1, 2005 12:00 AM', 'DateTime'),
+            array(new \DateTime('2000/01/01'), 'Jan 1, 2000, 12:00 AM', new \DateTime('2005/01/01'), 'Jan 1, 2005, 12:00 AM', 'DateTime'),
             array('b', '"b"', 'c', '"c"', 'string')
         );
     }
diff --git a/src/Symfony/Component/Validator/Tests/Constraints/GreaterThanValidatorTest.php b/src/Symfony/Component/Validator/Tests/Constraints/GreaterThanValidatorTest.php
index e261c42c8b..14a7a6d16f 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/GreaterThanValidatorTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/GreaterThanValidatorTest.php
@@ -50,8 +50,8 @@ class GreaterThanValidatorTest extends AbstractComparisonValidatorTestCase
         return array(
             array(1, '1', 2, '2', 'integer'),
             array(2, '2', 2, '2', 'integer'),
-            array(new \DateTime('2000/01/01'), 'Jan 1, 2000 12:00 AM', new \DateTime('2005/01/01'), 'Jan 1, 2005 12:00 AM', 'DateTime'),
-            array(new \DateTime('2000/01/01'), 'Jan 1, 2000 12:00 AM', new \DateTime('2000/01/01'), 'Jan 1, 2000 12:00 AM', 'DateTime'),
+            array(new \DateTime('2000/01/01'), 'Jan 1, 2000, 12:00 AM', new \DateTime('2005/01/01'), 'Jan 1, 2005, 12:00 AM', 'DateTime'),
+            array(new \DateTime('2000/01/01'), 'Jan 1, 2000, 12:00 AM', new \DateTime('2000/01/01'), 'Jan 1, 2000, 12:00 AM', 'DateTime'),
             array('22', '"22"', '333', '"333"', 'string'),
             array('22', '"22"', '22', '"22"', 'string')
         );
diff --git a/src/Symfony/Component/Validator/Tests/Constraints/IdenticalToValidatorTest.php b/src/Symfony/Component/Validator/Tests/Constraints/IdenticalToValidatorTest.php
index 02f166c7cb..9c08523386 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/IdenticalToValidatorTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/IdenticalToValidatorTest.php
@@ -53,8 +53,8 @@ class IdenticalToValidatorTest extends AbstractComparisonValidatorTestCase
             array(1, '1', 2, '2', 'integer'),
             array(2, '2', '2', '"2"', 'string'),
             array('22', '"22"', '333', '"333"', 'string'),
-            array(new \DateTime('2001-01-01'), 'Jan 1, 2001 12:00 AM', new \DateTime('2001-01-01'), 'Jan 1, 2001 12:00 AM', 'DateTime'),
-            array(new \DateTime('2001-01-01'), 'Jan 1, 2001 12:00 AM', new \DateTime('1999-01-01'), 'Jan 1, 1999 12:00 AM', 'DateTime')
+            array(new \DateTime('2001-01-01'), 'Jan 1, 2001, 12:00 AM', new \DateTime('2001-01-01'), 'Jan 1, 2001, 12:00 AM', 'DateTime'),
+            array(new \DateTime('2001-01-01'), 'Jan 1, 2001, 12:00 AM', new \DateTime('1999-01-01'), 'Jan 1, 1999, 12:00 AM', 'DateTime')
         );
     }
 }
diff --git a/src/Symfony/Component/Validator/Tests/Constraints/LessThanOrEqualValidatorTest.php b/src/Symfony/Component/Validator/Tests/Constraints/LessThanOrEqualValidatorTest.php
index e2ce1bcbc1..fc41811a76 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/LessThanOrEqualValidatorTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/LessThanOrEqualValidatorTest.php
@@ -52,7 +52,7 @@ class LessThanOrEqualValidatorTest extends AbstractComparisonValidatorTestCase
     {
         return array(
             array(2, '2', 1, '1', 'integer'),
-            array(new \DateTime('2010-01-01'), 'Jan 1, 2010 12:00 AM', new \DateTime('2000-01-01'), 'Jan 1, 2000 12:00 AM', 'DateTime'),
+            array(new \DateTime('2010-01-01'), 'Jan 1, 2010, 12:00 AM', new \DateTime('2000-01-01'), 'Jan 1, 2000, 12:00 AM', 'DateTime'),
             array('c', '"c"', 'b', '"b"', 'string')
         );
     }
diff --git a/src/Symfony/Component/Validator/Tests/Constraints/LessThanValidatorTest.php b/src/Symfony/Component/Validator/Tests/Constraints/LessThanValidatorTest.php
index 9e88ac1e2b..5cb5673c81 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/LessThanValidatorTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/LessThanValidatorTest.php
@@ -50,8 +50,8 @@ class LessThanValidatorTest extends AbstractComparisonValidatorTestCase
         return array(
             array(3, '3', 2, '2', 'integer'),
             array(2, '2', 2, '2', 'integer'),
-            array(new \DateTime('2010-01-01'), 'Jan 1, 2010 12:00 AM', new \DateTime('2000-01-01'), 'Jan 1, 2000 12:00 AM', 'DateTime'),
-            array(new \DateTime('2000-01-01'), 'Jan 1, 2000 12:00 AM', new \DateTime('2000-01-01'), 'Jan 1, 2000 12:00 AM', 'DateTime'),
+            array(new \DateTime('2010-01-01'), 'Jan 1, 2010, 12:00 AM', new \DateTime('2000-01-01'), 'Jan 1, 2000, 12:00 AM', 'DateTime'),
+            array(new \DateTime('2000-01-01'), 'Jan 1, 2000, 12:00 AM', new \DateTime('2000-01-01'), 'Jan 1, 2000, 12:00 AM', 'DateTime'),
             array('333', '"333"', '22', '"22"', 'string'),
         );
     }
diff --git a/src/Symfony/Component/Validator/Tests/Constraints/NotEqualToValidatorTest.php b/src/Symfony/Component/Validator/Tests/Constraints/NotEqualToValidatorTest.php
index 334aeb219a..e0db97a0e7 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/NotEqualToValidatorTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/NotEqualToValidatorTest.php
@@ -51,7 +51,7 @@ class NotEqualToValidatorTest extends AbstractComparisonValidatorTestCase
             array(3, '3', 3, '3', 'integer'),
             array('2', '"2"', 2, '2', 'integer'),
             array('a', '"a"', 'a', '"a"', 'string'),
-            array(new \DateTime('2000-01-01'), 'Jan 1, 2000 12:00 AM', new \DateTime('2000-01-01'), 'Jan 1, 2000 12:00 AM', 'DateTime')
+            array(new \DateTime('2000-01-01'), 'Jan 1, 2000, 12:00 AM', new \DateTime('2000-01-01'), 'Jan 1, 2000, 12:00 AM', 'DateTime')
         );
     }
 }
diff --git a/src/Symfony/Component/Validator/Tests/Constraints/NotIdenticalToValidatorTest.php b/src/Symfony/Component/Validator/Tests/Constraints/NotIdenticalToValidatorTest.php
index 406a10163f..ad2865c457 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/NotIdenticalToValidatorTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/NotIdenticalToValidatorTest.php
@@ -54,7 +54,7 @@ class NotIdenticalToValidatorTest extends AbstractComparisonValidatorTestCase
         return array(
             array(3, '3', 3, '3', 'integer'),
             array('a', '"a"', 'a', '"a"', 'string'),
-            array($date, 'Jan 1, 2000 12:00 AM', $date, 'Jan 1, 2000 12:00 AM', 'DateTime')
+            array($date, 'Jan 1, 2000, 12:00 AM', $date, 'Jan 1, 2000, 12:00 AM', 'DateTime')
         );
     }
 }