diff --git a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/FrameworkExtension.php b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/FrameworkExtension.php
index a52caa46c032d..b390f2978113b 100644
--- a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/FrameworkExtension.php
+++ b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/FrameworkExtension.php
@@ -97,7 +97,6 @@
 use Symfony\Component\Translation\Translator;
 use Symfony\Component\Validator\ConstraintValidatorInterface;
 use Symfony\Component\Validator\ObjectInitializerInterface;
-use Symfony\Component\Validator\Util\LegacyTranslatorProxy;
 use Symfony\Component\WebLink\HttpHeaderSerializer;
 use Symfony\Component\Workflow;
 use Symfony\Component\Workflow\WorkflowInterface;
@@ -1108,12 +1107,6 @@ private function registerValidationConfiguration(array $config, ContainerBuilder
 
         $validatorBuilder = $container->getDefinition('validator.builder');
 
-        if (class_exists(LegacyTranslatorProxy::class)) {
-            $calls = $validatorBuilder->getMethodCalls();
-            $calls[1] = ['setTranslator', [new Definition(LegacyTranslatorProxy::class, [new Reference('translator')])]];
-            $validatorBuilder->setMethodCalls($calls);
-        }
-
         $container->setParameter('validator.translation_domain', $config['translation_domain']);
 
         $files = ['xml' => [], 'yml' => []];
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/FrameworkExtensionTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/FrameworkExtensionTest.php
index b6b520daa19cb..862786c9b8b80 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/FrameworkExtensionTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/FrameworkExtensionTest.php
@@ -50,7 +50,6 @@
 use Symfony\Component\Serializer\Serializer;
 use Symfony\Component\Translation\DependencyInjection\TranslatorPass;
 use Symfony\Component\Validator\DependencyInjection\AddConstraintValidatorsPass;
-use Symfony\Component\Validator\Util\LegacyTranslatorProxy;
 use Symfony\Component\Workflow;
 
 abstract class FrameworkExtensionTest extends TestCase
@@ -819,11 +818,7 @@ public function testValidation()
         $this->assertSame('setConstraintValidatorFactory', $calls[0][0]);
         $this->assertEquals([new Reference('validator.validator_factory')], $calls[0][1]);
         $this->assertSame('setTranslator', $calls[1][0]);
-        if (class_exists(LegacyTranslatorProxy::class)) {
-            $this->assertEquals([new Definition(LegacyTranslatorProxy::class, [new Reference('translator')])], $calls[1][1]);
-        } else {
-            $this->assertEquals([new Reference('translator')], $calls[1][1]);
-        }
+        $this->assertEquals([new Reference('translator')], $calls[1][1]);
         $this->assertSame('setTranslationDomain', $calls[2][0]);
         $this->assertSame(['%validator.translation_domain%'], $calls[2][1]);
         $this->assertSame('addXmlMappings', $calls[3][0]);
diff --git a/src/Symfony/Component/Validator/DependencyInjection/AddValidatorInitializersPass.php b/src/Symfony/Component/Validator/DependencyInjection/AddValidatorInitializersPass.php
index dcc02ca694589..284b93d19ed1c 100644
--- a/src/Symfony/Component/Validator/DependencyInjection/AddValidatorInitializersPass.php
+++ b/src/Symfony/Component/Validator/DependencyInjection/AddValidatorInitializersPass.php
@@ -16,7 +16,6 @@
 use Symfony\Component\DependencyInjection\ContainerBuilder;
 use Symfony\Component\DependencyInjection\Definition;
 use Symfony\Component\DependencyInjection\Reference;
-use Symfony\Component\Translation\TranslatorInterface as LegacyTranslatorInterface;
 use Symfony\Component\Validator\Util\LegacyTranslatorProxy;
 
 /**
@@ -65,7 +64,7 @@ public function process(ContainerBuilder $container)
                     $translator = $translator->getParent();
                 }
 
-                if (!is_subclass_of($class, LegacyTranslatorInterface::class)) {
+                if (class_exists(LegacyTranslatorProxy::class)) {
                     $arguments[0] = (new Definition(LegacyTranslatorProxy::class))->addArgument($arguments[0]);
                 }
             }
diff --git a/src/Symfony/Component/Validator/composer.json b/src/Symfony/Component/Validator/composer.json
index 88a29241f57c7..a25a791865d30 100644
--- a/src/Symfony/Component/Validator/composer.json
+++ b/src/Symfony/Component/Validator/composer.json
@@ -19,7 +19,8 @@
         "php": "^7.1.3",
         "symfony/contracts": "^1.0.2",
         "symfony/polyfill-ctype": "~1.8",
-        "symfony/polyfill-mbstring": "~1.0"
+        "symfony/polyfill-mbstring": "~1.0",
+        "symfony/translation": "~4.2"
     },
     "require-dev": {
         "symfony/http-foundation": "~4.1",
@@ -32,7 +33,6 @@
         "symfony/expression-language": "~3.4|~4.0",
         "symfony/cache": "~3.4|~4.0",
         "symfony/property-access": "~3.4|~4.0",
-        "symfony/translation": "~4.2",
         "doctrine/annotations": "~1.0",
         "doctrine/cache": "~1.0",
         "egulias/email-validator": "^1.2.8|~2.0"