diff --git a/src/Symfony/Bundle/TwigBundle/DependencyInjection/Configuration.php b/src/Symfony/Bundle/TwigBundle/DependencyInjection/Configuration.php
index 40982a5debb5..5fd2002bed5f 100644
--- a/src/Symfony/Bundle/TwigBundle/DependencyInjection/Configuration.php
+++ b/src/Symfony/Bundle/TwigBundle/DependencyInjection/Configuration.php
@@ -76,7 +76,7 @@ private function addGlobalsSection(ArrayNodeDefinition $rootNode)
             ->fixXmlConfig('global')
             ->children()
                 ->arrayNode('globals')
-                    ->keepKeys()
+                    ->normalizeKeys(false)
                     ->useAttributeAsKey('key')
                     ->example(array('foo' => '"@bar"', 'pi' => 3.14))
                     ->prototype('array')
@@ -127,7 +127,7 @@ private function addTwigOptions(ArrayNodeDefinition $rootNode)
                 ->scalarNode('auto_reload')->end()
                 ->scalarNode('optimizations')->end()
                 ->arrayNode('paths')
-                    ->keepKeys()
+                    ->normalizeKeys(false)
                     ->beforeNormalization()
                         ->always()
                         ->then(function ($paths) {
diff --git a/src/Symfony/Component/Config/CHANGELOG.md b/src/Symfony/Component/Config/CHANGELOG.md
index 18065b26b488..1478ca1403ef 100644
--- a/src/Symfony/Component/Config/CHANGELOG.md
+++ b/src/Symfony/Component/Config/CHANGELOG.md
@@ -4,7 +4,7 @@ CHANGELOG
 2.2.0
 -----
 
- * added a `keepKeys()` method for array nodes (to avoid key normalization)
+ * added a `normalizeKeys()` method for array nodes (to avoid key normalization)
  * added numerical type handling for config definitions
  * added convenience methods for optional configuration sections to ArrayNodeDefinition
  * added a utils class for XML manipulations
diff --git a/src/Symfony/Component/Config/Definition/Builder/ArrayNodeDefinition.php b/src/Symfony/Component/Config/Definition/Builder/ArrayNodeDefinition.php
index b6b976d255d8..d0d97ff02c2f 100644
--- a/src/Symfony/Component/Config/Definition/Builder/ArrayNodeDefinition.php
+++ b/src/Symfony/Component/Config/Definition/Builder/ArrayNodeDefinition.php
@@ -284,13 +284,15 @@ public function ignoreExtraKeys()
     }
 
     /**
-     * Disables key normalization.
+     * Sets key normalization.
+     *
+     * @param Boolean $bool Whether to enable key normalization
      *
      * @return ArrayNodeDefinition
      */
-    public function keepKeys()
+    public function normalizeKeys($bool)
     {
-        $this->normalizeKeys = false;
+        $this->normalizeKeys = (Boolean) $bool;
 
         return $this;
     }