diff --git a/src/Symfony/Bridge/Doctrine/Tests/ExpressionLanguage/DoctrineParserCacheTest.php b/src/Symfony/Bridge/Doctrine/Tests/ExpressionLanguage/DoctrineParserCacheTest.php
index 11d8084a57..517c22b161 100644
--- a/src/Symfony/Bridge/Doctrine/Tests/ExpressionLanguage/DoctrineParserCacheTest.php
+++ b/src/Symfony/Bridge/Doctrine/Tests/ExpressionLanguage/DoctrineParserCacheTest.php
@@ -1,5 +1,14 @@
 <?php
 
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
 namespace Symfony\Bridge\Doctrine\Tests\ExpressionLanguage;
 
 use Symfony\Bridge\Doctrine\ExpressionLanguage\DoctrineParserCache;
diff --git a/src/Symfony/Component/ExpressionLanguage/ExpressionLanguage.php b/src/Symfony/Component/ExpressionLanguage/ExpressionLanguage.php
index dbab8ba08f..b0f0b39526 100644
--- a/src/Symfony/Component/ExpressionLanguage/ExpressionLanguage.php
+++ b/src/Symfony/Component/ExpressionLanguage/ExpressionLanguage.php
@@ -24,17 +24,16 @@ class ExpressionLanguage
     /**
      * @var ParserCacheInterface
      */
-    private $parserCache;
-
+    private $cache;
     private $lexer;
     private $parser;
     private $compiler;
 
     protected $functions;
 
-    public function __construct(ParserCacheInterface $parserCache = null)
+    public function __construct(ParserCacheInterface $cache = null)
     {
-        $this->parserCache = $parserCache ?: new ArrayParserCache();
+        $this->cache = $cache ?: new ArrayParserCache();
         $this->functions = array();
         $this->registerFunctions();
     }
@@ -80,11 +79,11 @@ class ExpressionLanguage
 
         $key = $expression.'//'.implode('-', $names);
 
-        if (null === $parsedExpression = $this->parserCache->fetch($key)) {
+        if (null === $parsedExpression = $this->cache->fetch($key)) {
             $nodes = $this->getParser()->parse($this->getLexer()->tokenize((string) $expression), $names);
             $parsedExpression = new ParsedExpression((string) $expression, $nodes);
 
-            $this->parserCache->save($key, $parsedExpression);
+            $this->cache->save($key, $parsedExpression);
         }
 
         return $parsedExpression;
diff --git a/src/Symfony/Component/ExpressionLanguage/ParserCache/ParserCacheInterface.php b/src/Symfony/Component/ExpressionLanguage/ParserCache/ParserCacheInterface.php
index 888b522645..d268a9970f 100644
--- a/src/Symfony/Component/ExpressionLanguage/ParserCache/ParserCacheInterface.php
+++ b/src/Symfony/Component/ExpressionLanguage/ParserCache/ParserCacheInterface.php
@@ -19,13 +19,18 @@ use Symfony\Component\ExpressionLanguage\ParsedExpression;
 interface ParserCacheInterface
 {
     /**
-     * @param  string                $key
-     * @param  ParsedExpression      $data
+     * Saves an expression in the cache.
+     *
+     * @param string           $key  The cache key
+     * @param ParsedExpression $data A ParsedExpression instance to store in the cache
      */
     public function save($key, ParsedExpression $expression);
 
     /**
-     * @param  string                $key
+     * Fetches an expression from the cache.
+     *
+     * @param string $key The cache key
+     *
      * @return ParsedExpression|null
      */
     public function fetch($key);
diff --git a/src/Symfony/Component/ExpressionLanguage/Tests/ExpressionLanguageTest.php b/src/Symfony/Component/ExpressionLanguage/Tests/ExpressionLanguageTest.php
index 0ef42bb0ca..170ac40d0a 100644
--- a/src/Symfony/Component/ExpressionLanguage/Tests/ExpressionLanguageTest.php
+++ b/src/Symfony/Component/ExpressionLanguage/Tests/ExpressionLanguageTest.php
@@ -1,5 +1,14 @@
 <?php
 
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
 namespace Symfony\Component\ExpressionLanguage\Tests;
 
 use Symfony\Component\ExpressionLanguage\ExpressionLanguage;