diff --git a/src/Symfony/Component/ClassLoader/DebugClassLoader.php b/src/Symfony/Component/ClassLoader/DebugClassLoader.php
index dbfb5ab1e303..d1e1de030638 100644
--- a/src/Symfony/Component/ClassLoader/DebugClassLoader.php
+++ b/src/Symfony/Component/ClassLoader/DebugClassLoader.php
@@ -69,6 +69,18 @@ public function unregister()
         spl_autoload_unregister(array($this, 'loadClass'));
     }
 
+    /**
+     * Finds a file by class name
+     *
+     * @param string $class A class name to resolve to file
+     *
+     * @return string|null
+     */
+    public function findFile($class)
+    {
+        return $this->classFinder->findFile($class);
+    }
+
     /**
      * Loads the given class or interface.
      *