diff --git a/src/TwigRenderer.php b/src/TwigRenderer.php
index f547270..cdd2414 100755
--- a/src/TwigRenderer.php
+++ b/src/TwigRenderer.php
@@ -27,7 +27,7 @@ public function __construct()
             'debug' => ForumEnv::get('FEATHER_DEBUG'),
         ]);
         // load extensions
-        if (ForumEnv::get('FEATHER_DEBUG')) {
+        if (ForumEnv::get('FEATHER_DEBUG') && Container::get('twig_profile')) {
             $this->twig->addExtension(new \Twig_Extension_Profiler(
                 Container::get('twig_profile')
             ));