diff --git a/src/Bridge/Symfony/Bundle/DependencyInjection/ApiPlatformExtension.php b/src/Bridge/Symfony/Bundle/DependencyInjection/ApiPlatformExtension.php
index 582f48e7139..99c31fbfebf 100644
--- a/src/Bridge/Symfony/Bundle/DependencyInjection/ApiPlatformExtension.php
+++ b/src/Bridge/Symfony/Bundle/DependencyInjection/ApiPlatformExtension.php
@@ -500,7 +500,7 @@ private function registerHttpCache(ContainerBuilder $container, array $config, X
 
         // Load purger
         $purger = $config['http_cache']['invalidation']['purger'];
-        $container->setAlias('api_platform.http_cache.purger', 'api_platform.http_cache.purger.'.$purger);
+        $container->setAlias('api_platform.http_cache.purger', "api_platform.http_cache.purger.$purger");
 
         if ('varnish' !== $purger) {
             return;