diff --git a/DependencyInjection/FrameworkExtension.php b/DependencyInjection/FrameworkExtension.php
index a52caa46c..bc09035fa 100644
--- a/DependencyInjection/FrameworkExtension.php
+++ b/DependencyInjection/FrameworkExtension.php
@@ -95,6 +95,7 @@
 use Symfony\Component\Stopwatch\Stopwatch;
 use Symfony\Component\Translation\Command\XliffLintCommand as BaseXliffLintCommand;
 use Symfony\Component\Translation\Translator;
+use Symfony\Component\Translation\TranslatorInterface;
 use Symfony\Component\Validator\ConstraintValidatorInterface;
 use Symfony\Component\Validator\ObjectInitializerInterface;
 use Symfony\Component\Validator\Util\LegacyTranslatorProxy;
@@ -1108,7 +1109,7 @@ private function registerValidationConfiguration(array $config, ContainerBuilder
 
         $validatorBuilder = $container->getDefinition('validator.builder');
 
-        if (class_exists(LegacyTranslatorProxy::class)) {
+        if (interface_exists(TranslatorInterface::class) && class_exists(LegacyTranslatorProxy::class)) {
             $calls = $validatorBuilder->getMethodCalls();
             $calls[1] = ['setTranslator', [new Definition(LegacyTranslatorProxy::class, [new Reference('translator')])]];
             $validatorBuilder->setMethodCalls($calls);
diff --git a/Tests/DependencyInjection/FrameworkExtensionTest.php b/Tests/DependencyInjection/FrameworkExtensionTest.php
index b6b520daa..37b958a42 100644
--- a/Tests/DependencyInjection/FrameworkExtensionTest.php
+++ b/Tests/DependencyInjection/FrameworkExtensionTest.php
@@ -49,6 +49,7 @@
 use Symfony\Component\Serializer\Normalizer\JsonSerializableNormalizer;
 use Symfony\Component\Serializer\Serializer;
 use Symfony\Component\Translation\DependencyInjection\TranslatorPass;
+use Symfony\Component\Translation\TranslatorInterface;
 use Symfony\Component\Validator\DependencyInjection\AddConstraintValidatorsPass;
 use Symfony\Component\Validator\Util\LegacyTranslatorProxy;
 use Symfony\Component\Workflow;
@@ -819,7 +820,7 @@ 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)) {
+        if (interface_exists(TranslatorInterface::class) && 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]);