diff --git a/Templating/Twig/DebugTemplate.php b/Templating/Twig/DebugTemplate.php
index 3d9eaae..3465ecb 100644
--- a/Templating/Twig/DebugTemplate.php
+++ b/Templating/Twig/DebugTemplate.php
@@ -23,7 +23,7 @@
  * Mainly copy/paste of eZ\Bundle\EzPublishDebugBundle\Twig\DebugTemplate, courtesy of eZ Systems AS.
  * Adds mapping between template name and path, to display actual used template source when using themes.
  */
-abstract class DebugTemplate extends Twig_Template
+class DebugTemplate extends Twig_Template
 {
     /**
      * Map between template names and associated paths.
@@ -89,4 +89,36 @@ public function display(array $context, array $blocks = array())
             echo $templateResult;
         }
     }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getTemplateName()
+    {
+        return '';
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getSource()
+    {
+        return '';
+    }
+    
+    /**
+     * {@inheritdoc}
+     */
+    protected function doDisplay(array $context, array $blocks = array())
+    {
+        return '';
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getDebugInfo()
+    {
+        return array();
+    }
 }