diff --git a/src/Symfony/Component/String/Slugger/AsciiSlugger.php b/src/Symfony/Component/String/Slugger/AsciiSlugger.php
index 5a33c465aa..0b8c60c7bf 100644
--- a/src/Symfony/Component/String/Slugger/AsciiSlugger.php
+++ b/src/Symfony/Component/String/Slugger/AsciiSlugger.php
@@ -15,6 +15,10 @@ use Symfony\Component\String\AbstractUnicodeString;
 use Symfony\Component\String\UnicodeString;
 use Symfony\Contracts\Translation\LocaleAwareInterface;
 
+if (!interface_exists(LocaleAwareInterface::class)) {
+    throw new \LogicException('You cannot use the "Symfony\Component\String\Slugger\AsciiSlugger" as the "symfony/translation-contracts" package is not installed. Try running "composer require symfony/translation-contracts".');
+}
+
 /**
  * @author Titouan Galopin <galopintitouan@gmail.com>
  *