diff --git a/src/Symfony/Component/Config/Definition/Builder/ArrayNodeDefinition.php b/src/Symfony/Component/Config/Definition/Builder/ArrayNodeDefinition.php
index d2226f63f1ba0..003f9ae1ca29b 100644
--- a/src/Symfony/Component/Config/Definition/Builder/ArrayNodeDefinition.php
+++ b/src/Symfony/Component/Config/Definition/Builder/ArrayNodeDefinition.php
@@ -287,9 +287,10 @@ public function performNoDeepMerging()
      * Allows extra config keys to be specified under an array without
      * throwing an exception.
      *
-     * Those config values are simply ignored. This should be used only
-     * in special cases where you want to send an entire configuration
-     * array through a special tree that processes only part of the array.
+     * Those config values are simply ignored and removed from the
+     * resulting array. This should be used only in special cases where
+     * you want to send an entire configuration array through a special
+     * tree that processes only part of the array.
      *
      * @return ArrayNodeDefinition
      */