diff --git a/src/Symfony/Bundle/TwigBundle/DependencyInjection/Compiler/ExtensionPass.php b/src/Symfony/Bundle/TwigBundle/DependencyInjection/Compiler/ExtensionPass.php
index a775b10fb6..49e966ef65 100644
--- a/src/Symfony/Bundle/TwigBundle/DependencyInjection/Compiler/ExtensionPass.php
+++ b/src/Symfony/Bundle/TwigBundle/DependencyInjection/Compiler/ExtensionPass.php
@@ -27,7 +27,7 @@ class ExtensionPass implements CompilerPassInterface
             $container->getDefinition('twig.loader')->addMethodCall('addPath', array(dirname(dirname($reflClass->getFileName())).'/Resources/views/Form'));
         }
 
-        if (false === $container->has('translator')) {
+        if ($container->has('translator')) {
             $container->getDefinition('twig.extension.trans')->addTag('twig.extension');
         }
     }