diff --git a/web/app.php b/web/app.php
index b70e120d35..336e655a14 100644
--- a/web/app.php
+++ b/web/app.php
@@ -9,8 +9,9 @@
 // Change 'sf2' to a unique prefix in order to prevent cache key conflicts
 // with other applications also using APC.
 /*
-$loader = new ApcClassLoader('sf2', $loader);
-$loader->register(true);
+$apcLoader = new ApcClassLoader('sf2', $loader);
+$loader->unregister();
+$apcLoader->register(true);
 */
 
 require_once __DIR__.'/../app/AppKernel.php';