diff --git a/src/Symfony/Component/Routing/Annotation/Route.php b/src/Symfony/Component/Routing/Annotation/Route.php
index 84c15fc2f7..e593f97ff6 100644
--- a/src/Symfony/Component/Routing/Annotation/Route.php
+++ b/src/Symfony/Component/Routing/Annotation/Route.php
@@ -44,7 +44,7 @@ class Route
         }
 
         foreach ($data as $key => $value) {
-            $method = 'set'.$key;
+            $method = 'set'.str_replace('_', '', $key);
             if (!method_exists($this, $method)) {
                 throw new \BadMethodCallException(sprintf("Unknown property '%s' on annotation '%s'.", $key, get_class($this)));
             }
diff --git a/src/Symfony/Component/Routing/Tests/Annotation/RouteTest.php b/src/Symfony/Component/Routing/Tests/Annotation/RouteTest.php
index ff3c20c26d..e1da002700 100644
--- a/src/Symfony/Component/Routing/Tests/Annotation/RouteTest.php
+++ b/src/Symfony/Component/Routing/Tests/Annotation/RouteTest.php
@@ -39,7 +39,8 @@ class RouteTest extends \PHPUnit_Framework_TestCase
            array('requirements', array('_method' => 'GET'), 'getRequirements'),
            array('options', array('compiler_class' => 'RouteCompiler'), 'getOptions'),
            array('name', 'blog_index', 'getName'),
-           array('defaults', array('_controller' => 'MyBlogBundle:Blog:index'), 'getDefaults')
+           array('defaults', array('_controller' => 'MyBlogBundle:Blog:index'), 'getDefaults'),
+           array('hostname_pattern', array('{locale}.example.com'), 'getHostnamePattern')
         );
     }
 }