diff --git a/extra/twig-extra-bundle/TwigExtraBundle.php b/extra/twig-extra-bundle/TwigExtraBundle.php
index 5ed32a8cc..a9c8f734b 100644
--- a/extra/twig-extra-bundle/TwigExtraBundle.php
+++ b/extra/twig-extra-bundle/TwigExtraBundle.php
@@ -17,6 +17,7 @@ use Twig\Extra\TwigExtraBundle\DependencyInjection\Compiler\MissingExtensionSugg
 
 class TwigExtraBundle extends Bundle
 {
+    /** @return void */
     public function build(ContainerBuilder $container)
     {
         parent::build($container);