diff --git a/src/Symfony/Component/VarDumper/Tests/Caster/ReflectionCasterTest.php b/src/Symfony/Component/VarDumper/Tests/Caster/ReflectionCasterTest.php
index f4cc50efc597c..fc5cee379f59f 100644
--- a/src/Symfony/Component/VarDumper/Tests/Caster/ReflectionCasterTest.php
+++ b/src/Symfony/Component/VarDumper/Tests/Caster/ReflectionCasterTest.php
@@ -147,6 +147,10 @@ class: "Symfony\Component\VarDumper\Tests\Caster\ReflectionCasterTest"
      */
     public function testGenerator()
     {
+        if (extension_loaded('xdebug')) {
+            $this->markTestSkipped('xdebug is active');
+        }
+
         $g = new GeneratorDemo();
         $g = $g->baz();
         $r = new \ReflectionGenerator($g);
diff --git a/src/Symfony/Component/VarDumper/Tests/VarClonerTest.php b/src/Symfony/Component/VarDumper/Tests/VarClonerTest.php
index eb2d0b0eda65c..89634173670f2 100644
--- a/src/Symfony/Component/VarDumper/Tests/VarClonerTest.php
+++ b/src/Symfony/Component/VarDumper/Tests/VarClonerTest.php
@@ -157,6 +157,10 @@ public function testClone()
 
     public function testJsonCast()
     {
+        if (ini_get('xdebug.overload_var_dump') == 2) {
+            $this->markTestSkipped('xdebug is active');
+        }
+
         $data = (array) json_decode('{"1":{}}');
 
         $cloner = new VarCloner();