diff --git a/.travis.php b/.travis.php
index 1334f14ad4..511e05008a 100644
--- a/.travis.php
+++ b/.travis.php
@@ -19,8 +19,11 @@ foreach ($dirs as $dir) {
     }
     echo "$dir\n";
 
-    $json = file_get_contents($dir.'/composer.json');
-    $package = json_decode($json);
+    $json = ltrim(file_get_contents($dir.'/composer.json'));
+    if (null === $package = json_decode($json)) {
+        passthru("composer validate $dir/composer.json");
+        exit(1);
+    }
 
     $package->repositories = array(array(
         'type' => 'composer',
diff --git a/src/Symfony/Component/HttpKernel/Tests/Fragment/FragmentHandlerTest.php b/src/Symfony/Component/HttpKernel/Tests/Fragment/FragmentHandlerTest.php
index b2903b84a1..f8955f1248 100644
--- a/src/Symfony/Component/HttpKernel/Tests/Fragment/FragmentHandlerTest.php
+++ b/src/Symfony/Component/HttpKernel/Tests/Fragment/FragmentHandlerTest.php
@@ -15,6 +15,9 @@ use Symfony\Component\HttpKernel\Fragment\FragmentHandler;
 use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\HttpFoundation\Response;
 
+/**
+ * @group time-sensitive
+ */
 class FragmentHandlerTest extends \PHPUnit_Framework_TestCase
 {
     private $requestStack;