diff --git a/src/Symfony/Component/Routing/Loader/XmlFileLoader.php b/src/Symfony/Component/Routing/Loader/XmlFileLoader.php
index 30fc1dac6a..a07c7f80a5 100644
--- a/src/Symfony/Component/Routing/Loader/XmlFileLoader.php
+++ b/src/Symfony/Component/Routing/Loader/XmlFileLoader.php
@@ -166,7 +166,9 @@ class XmlFileLoader extends FileLoader
      *
      * @return \DOMDocument
      *
-     * @throws \InvalidArgumentException When loading of XML file returns error
+     * @throws \InvalidArgumentException When loading of XML file fails because of syntax errors
+     *                                   or when the XML structure is not as expected by the scheme -
+     *                                   see validate()
      */
     protected function loadFile($file)
     {
diff --git a/src/Symfony/Component/Routing/Tests/Fixtures/missing_id.xml b/src/Symfony/Component/Routing/Tests/Fixtures/missing_id.xml
new file mode 100644
index 0000000000..52719be167
--- /dev/null
+++ b/src/Symfony/Component/Routing/Tests/Fixtures/missing_id.xml
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8" ?>
+
+<routes xmlns="http://symfony.com/schema/routing"
+    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xsi:schemaLocation="http://symfony.com/schema/routing http://symfony.com/schema/routing/routing-1.0.xsd">
+
+    <route pattern="/test"></route>
+</routes>
diff --git a/src/Symfony/Component/Routing/Tests/Fixtures/missing_path.xml b/src/Symfony/Component/Routing/Tests/Fixtures/missing_path.xml
new file mode 100644
index 0000000000..a7a8e7b39b
--- /dev/null
+++ b/src/Symfony/Component/Routing/Tests/Fixtures/missing_path.xml
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8" ?>
+
+<routes xmlns="http://symfony.com/schema/routing"
+    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xsi:schemaLocation="http://symfony.com/schema/routing http://symfony.com/schema/routing/routing-1.0.xsd">
+
+    <route id="myroute"></route>
+</routes>
\ No newline at end of file
diff --git a/src/Symfony/Component/Routing/Tests/Fixtures/namespaceprefix.xml b/src/Symfony/Component/Routing/Tests/Fixtures/namespaceprefix.xml
new file mode 100644
index 0000000000..efc4da9b37
--- /dev/null
+++ b/src/Symfony/Component/Routing/Tests/Fixtures/namespaceprefix.xml
@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="UTF-8" ?>
+
+<r:routes xmlns:r="http://symfony.com/schema/routing"
+    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xsi:schemaLocation="http://symfony.com/schema/routing http://symfony.com/schema/routing/routing-1.0.xsd">
+
+    <r:route id="blog_show" pattern="/blog/{slug}" hostname-pattern="{_locale}.example.com">
+        <r:default key="_controller">MyBundle:Blog:show</r:default>
+        <requirement xmlns="http://symfony.com/schema/routing" key="slug">\w+</requirement>
+        <r2:requirement xmlns:r2="http://symfony.com/schema/routing" key="_locale">en|fr|de</r2:requirement>
+        <r:option key="compiler_class">RouteCompiler</r:option>
+    </r:route>
+</r:routes>
diff --git a/src/Symfony/Component/Routing/Tests/Loader/XmlFileLoaderTest.php b/src/Symfony/Component/Routing/Tests/Loader/XmlFileLoaderTest.php
index 235a9d13af..993a121071 100644
--- a/src/Symfony/Component/Routing/Tests/Loader/XmlFileLoaderTest.php
+++ b/src/Symfony/Component/Routing/Tests/Loader/XmlFileLoaderTest.php
@@ -56,6 +56,21 @@ class XmlFileLoaderTest extends \PHPUnit_Framework_TestCase
         $this->assertEquals('RouteCompiler', $route->getOption('compiler_class'));
     }
 
+    public function testLoadWithNamespacePrefix()
+    {
+        $loader = new XmlFileLoader(new FileLocator(array(__DIR__.'/../Fixtures')));
+        $routeCollection = $loader->load('namespaceprefix.xml');
+
+        $this->assertCount(1, $routeCollection, 'One route is loaded');
+        $route = $routeCollection->get('blog_show');
+        $this->assertEquals('/blog/{slug}', $route->getPattern());
+        $this->assertEquals('MyBundle:Blog:show', $route->getDefault('_controller'));
+        $this->assertEquals('\w+', $route->getRequirement('slug'));
+        $this->assertEquals('en|fr|de', $route->getRequirement('_locale'));
+        $this->assertEquals('{_locale}.example.com', $route->getHostnamePattern());
+        $this->assertEquals('RouteCompiler', $route->getOption('compiler_class'));
+    }
+
     public function testLoadWithImport()
     {
         $loader = new XmlFileLoader(new FileLocator(array(__DIR__.'/../Fixtures')));
@@ -94,7 +109,7 @@ class XmlFileLoaderTest extends \PHPUnit_Framework_TestCase
 
     public function getPathsToInvalidFiles()
     {
-        return array(array('nonvalidnode.xml'), array('nonvalidroute.xml'), array('nonvalid.xml'));
+        return array(array('nonvalidnode.xml'), array('nonvalidroute.xml'), array('nonvalid.xml'), array('missing_id.xml'), array('missing_path.xml'));
     }
 
     /**