diff --git a/src/Symfony/Contracts/Service/ServiceSubscriberTrait.php b/src/Symfony/Contracts/Service/ServiceSubscriberTrait.php
index 020887b3f5736..48c610ab17144 100644
--- a/src/Symfony/Contracts/Service/ServiceSubscriberTrait.php
+++ b/src/Symfony/Contracts/Service/ServiceSubscriberTrait.php
@@ -29,12 +29,6 @@ trait ServiceSubscriberTrait
      */
     public static function getSubscribedServices(): array
     {
-        static $services;
-
-        if (null !== $services) {
-            return $services;
-        }
-
         $services = method_exists(get_parent_class(self::class) ?: '', __FUNCTION__) ? parent::getSubscribedServices() : [];
 
         foreach ((new \ReflectionClass(self::class))->getMethods() as $method) {