diff --git a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/UnusedTagsPass.php b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/UnusedTagsPass.php
index 532b0af819..be701ab4c6 100644
--- a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/UnusedTagsPass.php
+++ b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/UnusedTagsPass.php
@@ -32,6 +32,7 @@ class UnusedTagsPass implements CompilerPassInterface
         'controller.service_arguments',
         'config_cache.resource_checker',
         'data_collector',
+        'error_renderer.renderer',
         'form.type',
         'form.type_extension',
         'form.type_guesser',