diff --git a/src/Symfony/Component/DependencyInjection/ParameterBag/ParameterBagInterface.php b/src/Symfony/Component/DependencyInjection/ParameterBag/ParameterBagInterface.php
index 96003547b69fb..41f8221c466f9 100644
--- a/src/Symfony/Component/DependencyInjection/ParameterBag/ParameterBagInterface.php
+++ b/src/Symfony/Component/DependencyInjection/ParameterBag/ParameterBagInterface.php
@@ -60,6 +60,13 @@ public function all();
      */
     public function get($name);
 
+    /**
+     * Removes a parameter.
+     *
+     * @param string $name The parameter name
+     */
+    public function remove($name);
+
     /**
      * Sets a service container parameter.
      *