diff --git a/src/Symfony/Component/Validator/Constraints/DateTimeValidator.php b/src/Symfony/Component/Validator/Constraints/DateTimeValidator.php
index bad043f20e..8d0350532d 100644
--- a/src/Symfony/Component/Validator/Constraints/DateTimeValidator.php
+++ b/src/Symfony/Component/Validator/Constraints/DateTimeValidator.php
@@ -57,6 +57,12 @@ class DateTimeValidator extends DateValidator
             return;
         }
 
+        if('+' === substr($constraint->format, -1)) {
+            $errors['warnings'] = array_filter($errors['warnings'], function($warning) {
+                return 'Trailing data' !== $warning;
+            });
+        }
+
         foreach ($errors['warnings'] as $warning) {
             if ('The parsed date was invalid' === $warning) {
                 $this->context->buildViolation($constraint->message)
diff --git a/src/Symfony/Component/Validator/Tests/Constraints/DateTimeValidatorTest.php b/src/Symfony/Component/Validator/Tests/Constraints/DateTimeValidatorTest.php
index 55bfe45143..8ff515772d 100644
--- a/src/Symfony/Component/Validator/Tests/Constraints/DateTimeValidatorTest.php
+++ b/src/Symfony/Component/Validator/Tests/Constraints/DateTimeValidatorTest.php
@@ -128,4 +128,12 @@ class DateTimeValidatorTest extends ConstraintValidatorTestCase
             ['Y-m-d H:i:s', '2010-01-01 00:00:60', DateTime::INVALID_TIME_ERROR],
         ];
     }
+
+    public function testDateTimeWithTrailingData()
+    {
+        $this->validator->validate('1995-05-10 00:00:00', new DateTime([
+            'format' => 'Y-m-d+',
+        ]));
+        $this->assertNoViolation();
+    }
 }