diff --git a/Extension/TranslationExtension.php b/Extension/TranslationExtension.php
index 70cb0534..0204df05 100644
--- a/Extension/TranslationExtension.php
+++ b/Extension/TranslationExtension.php
@@ -24,6 +24,9 @@
 use Twig\TokenParser\AbstractTokenParser;
 use Twig\TwigFilter;
 
+// Help opcache.preload discover always-needed symbols
+class_exists(TranslatorInterface::class);
+
 /**
  * Provides integration of the Translation component with Twig.
  *