diff --git a/src/Symfony/Components/DependencyInjection/Loader/IniFileLoader.php b/src/Symfony/Components/DependencyInjection/Loader/IniFileLoader.php
index 680430162b..e4e1d5e383 100644
--- a/src/Symfony/Components/DependencyInjection/Loader/IniFileLoader.php
+++ b/src/Symfony/Components/DependencyInjection/Loader/IniFileLoader.php
@@ -25,39 +25,31 @@ class IniFileLoader extends FileLoader
   /**
    * Loads a resource.
    *
-   * @param mixed $resource The resource path
+   * @param  string $file An INI file path
    *
    * @return BuilderConfiguration A BuilderConfiguration instance
    */
-  public function load($files)
+  public function load($file)
   {
-    if (!is_array($files))
-    {
-      $files = array($files);
-    }
-
     $configuration = new BuilderConfiguration();
 
-    foreach ($files as $file)
+    $path = $this->getAbsolutePath($file);
+    if (!file_exists($path))
     {
-      $path = $this->getAbsolutePath($file);
-      if (!file_exists($path))
-      {
-        throw new \InvalidArgumentException(sprintf('The %s file does not exist.', $file));
-      }
+      throw new \InvalidArgumentException(sprintf('The %s file does not exist.', $file));
+    }
 
-      $result = parse_ini_file($path, true);
-      if (false === $result || array() === $result)
-      {
-        throw new \InvalidArgumentException(sprintf('The %s file is not valid.', $file));
-      }
+    $result = parse_ini_file($path, true);
+    if (false === $result || array() === $result)
+    {
+      throw new \InvalidArgumentException(sprintf('The %s file is not valid.', $file));
+    }
 
-      if (isset($result['parameters']) && is_array($result['parameters']))
+    if (isset($result['parameters']) && is_array($result['parameters']))
+    {
+      foreach ($result['parameters'] as $key => $value)
       {
-        foreach ($result['parameters'] as $key => $value)
-        {
-          $configuration->setParameter(strtolower($key), $value);
-        }
+        $configuration->setParameter(strtolower($key), $value);
       }
     }
 
diff --git a/src/Symfony/Components/DependencyInjection/Loader/LoaderInterface.php b/src/Symfony/Components/DependencyInjection/Loader/LoaderInterface.php
index 5dc6bbf1b5..e55e7a6d6b 100644
--- a/src/Symfony/Components/DependencyInjection/Loader/LoaderInterface.php
+++ b/src/Symfony/Components/DependencyInjection/Loader/LoaderInterface.php
@@ -56,7 +56,7 @@ interface LoaderInterface
    * If you load file1.xml and file2.xml in this order, the value of complex
    * will be "foo".
    *
-   * @param mixed $resource The resource path
+   * @param mixed $resource The resource
    *
    * @return BuilderConfiguration A BuilderConfiguration instance
    */
diff --git a/src/Symfony/Components/DependencyInjection/Loader/XmlFileLoader.php b/src/Symfony/Components/DependencyInjection/Loader/XmlFileLoader.php
index 6e3881cacc..e4ea85e899 100644
--- a/src/Symfony/Components/DependencyInjection/Loader/XmlFileLoader.php
+++ b/src/Symfony/Components/DependencyInjection/Loader/XmlFileLoader.php
@@ -28,41 +28,30 @@ class XmlFileLoader extends FileLoader
   /**
    * Loads an array of XML files.
    *
-   * @param  array $files An array of XML files
+   * @param  string $file An XML file path
    *
    * @return BuilderConfiguration A BuilderConfiguration instance
    */
-  public function load($files)
-  {
-    if (!is_array($files))
-    {
-      $files = array($files);
-    }
-
-    return $this->parse($this->getFilesAsXml($files));
-  }
-
-  protected function parse(array $xmls)
+  public function load($file)
   {
     $configuration = new BuilderConfiguration();
 
-    foreach ($xmls as $file => $xml)
-    {
-      // anonymous services
-      $xml = $this->processAnonymousServices($configuration, $xml, $file);
+    $xml = $this->loadFile($file);
 
-      // imports
-      $this->parseImports($configuration, $xml, $file);
+    // anonymous services
+    $xml = $this->processAnonymousServices($configuration, $xml, $file);
 
-      // parameters
-      $this->parseParameters($configuration, $xml, $file);
+    // imports
+    $this->parseImports($configuration, $xml, $file);
 
-      // services
-      $this->parseDefinitions($configuration, $xml, $file);
+    // parameters
+    $this->parseParameters($configuration, $xml, $file);
 
-      // extensions
-      $this->loadFromExtensions($configuration, $xml);
-    }
+    // services
+    $this->parseDefinitions($configuration, $xml, $file);
+
+    // extensions
+    $this->loadFromExtensions($configuration, $xml);
 
     return $configuration;
   }
@@ -92,7 +81,7 @@ class XmlFileLoader extends FileLoader
 
   protected function parseImport($import, $file)
   {
-    if (isset($import['class']) && $import['class'] != get_class($this))
+    if (isset($import['class']) && $import['class'] !== get_class($this))
     {
       $class = (string) $import['class'];
       $loader = new $class($this->paths);
@@ -176,33 +165,27 @@ class XmlFileLoader extends FileLoader
     $configuration->setDefinition($id, $definition);
   }
 
-  protected function getFilesAsXml(array $files)
+  protected function loadFile($file)
   {
-    $xmls = array();
-    foreach ($files as $file)
+    $path = $this->getAbsolutePath($file);
+
+    if (!file_exists($path))
     {
-      $path = $this->getAbsolutePath($file);
-
-      if (!file_exists($path))
-      {
-        throw new \InvalidArgumentException(sprintf('The service file "%s" does not exist (in: %s).', $file, implode(', ', $this->paths)));
-      }
-
-      $dom = new \DOMDocument();
-      libxml_use_internal_errors(true);
-      if (!$dom->load(realpath($path), LIBXML_COMPACT))
-      {
-        throw new \InvalidArgumentException(implode("\n", $this->getXmlErrors()));
-      }
-      $dom->validateOnParse = true;
-      $dom->normalizeDocument();
-      libxml_use_internal_errors(false);
-      $this->validate($dom, $path);
-
-      $xmls[$path] = simplexml_import_dom($dom, 'Symfony\\Components\\DependencyInjection\\SimpleXMLElement');
+      throw new \InvalidArgumentException(sprintf('The service file "%s" does not exist (in: %s).', $file, implode(', ', $this->paths)));
     }
 
-    return $xmls;
+    $dom = new \DOMDocument();
+    libxml_use_internal_errors(true);
+    if (!$dom->load(realpath($path), LIBXML_COMPACT))
+    {
+      throw new \InvalidArgumentException(implode("\n", $this->getXmlErrors()));
+    }
+    $dom->validateOnParse = true;
+    $dom->normalizeDocument();
+    libxml_use_internal_errors(false);
+    $this->validate($dom, $path);
+
+    return simplexml_import_dom($dom, 'Symfony\\Components\\DependencyInjection\\SimpleXMLElement');
   }
 
   protected function processAnonymousServices(BuilderConfiguration $configuration, $xml, $file)
diff --git a/src/Symfony/Components/DependencyInjection/Loader/YamlFileLoader.php b/src/Symfony/Components/DependencyInjection/Loader/YamlFileLoader.php
index 078a737cfa..8dbafff51a 100644
--- a/src/Symfony/Components/DependencyInjection/Loader/YamlFileLoader.php
+++ b/src/Symfony/Components/DependencyInjection/Loader/YamlFileLoader.php
@@ -31,50 +31,39 @@ class YamlFileLoader extends FileLoader
   /**
    * Loads an array of Yaml files.
    *
-   * @param  array $files An array of Yaml files
+   * @param  string $file A YAML file path
    *
    * @return BuilderConfiguration A BuilderConfiguration instance
    */
-  public function load($files)
+  public function load($file)
   {
-    if (!is_array($files))
-    {
-      $files = array($files);
-    }
+    $content = $this->loadFile($file);
 
-    return $this->parse($this->getFilesAsArray($files));
-  }
-
-  protected function parse($data)
-  {
     $configuration = new BuilderConfiguration();
 
-    foreach ($data as $file => $content)
+    if (!$content)
     {
-      if (!$content)
-      {
-        continue;
-      }
-
-      // imports
-      $this->parseImports($configuration, $content, $file);
-
-      // parameters
-      if (isset($content['parameters']))
-      {
-        foreach ($content['parameters'] as $key => $value)
-        {
-          $configuration->setParameter(strtolower($key), $this->resolveServices($value));
-        }
-      }
-
-      // services
-      $this->parseDefinitions($configuration, $content, $file);
-
-      // extensions
-      $this->loadFromExtensions($configuration, $content);
+      return $configuration;
     }
 
+    // imports
+    $this->parseImports($configuration, $content, $file);
+
+    // parameters
+    if (isset($content['parameters']))
+    {
+      foreach ($content['parameters'] as $key => $value)
+      {
+        $configuration->setParameter(strtolower($key), $this->resolveServices($value));
+      }
+    }
+
+    // services
+    $this->parseDefinitions($configuration, $content, $file);
+
+    // extensions
+    $this->loadFromExtensions($configuration, $content);
+
     return $configuration;
   }
 
@@ -93,7 +82,7 @@ class YamlFileLoader extends FileLoader
 
   protected function parseImport($import, $file)
   {
-    if (isset($import['class']) && $import['class'] != get_class($this))
+    if (isset($import['class']) && $import['class'] !== get_class($this))
     {
       $class = $import['class'];
       $loader = new $class($this->paths);
@@ -175,22 +164,16 @@ class YamlFileLoader extends FileLoader
     $configuration->setDefinition($id, $definition);
   }
 
-  protected function getFilesAsArray(array $files)
+  protected function loadFile($file)
   {
-    $yamls = array();
-    foreach ($files as $file)
+    $path = $this->getAbsolutePath($file);
+
+    if (!file_exists($path))
     {
-      $path = $this->getAbsolutePath($file);
-
-      if (!file_exists($path))
-      {
-        throw new \InvalidArgumentException(sprintf('The service file "%s" does not exist (in: %s).', $file, implode(', ', $this->paths)));
-      }
-
-      $yamls[$path] = $this->validate(YAML::load($path), $path);
+      throw new \InvalidArgumentException(sprintf('The service file "%s" does not exist (in: %s).', $file, implode(', ', $this->paths)));
     }
 
-    return $yamls;
+    return $this->validate(YAML::load($path), $path);
   }
 
   protected function validate($content, $file)
diff --git a/tests/unit/Symfony/Components/DependencyInjection/Loader/IniLoaderTest.php b/tests/unit/Symfony/Components/DependencyInjection/Loader/IniLoaderTest.php
index 6de3ced425..9a44ea9e7f 100644
--- a/tests/unit/Symfony/Components/DependencyInjection/Loader/IniLoaderTest.php
+++ b/tests/unit/Symfony/Components/DependencyInjection/Loader/IniLoaderTest.php
@@ -13,22 +13,14 @@ require_once __DIR__.'/../../../../bootstrap.php';
 use Symfony\Components\DependencyInjection\Builder;
 use Symfony\Components\DependencyInjection\Loader\IniFileLoader;
 
-$t = new LimeTest(5);
+$t = new LimeTest(3);
 
 $fixturesPath = realpath(__DIR__.'/../../../../../fixtures/Symfony/Components/DependencyInjection/');
 
-$loader = new IniFileLoader($fixturesPath.'/ini');
-$config = $loader->load(array('parameters.ini'));
-$t->is($config->getParameters(), array('foo' => 'bar', 'bar' => '%foo%'), '->load() takes an array of file names as its first argument');
-
 $loader = new IniFileLoader($fixturesPath.'/ini');
 $config = $loader->load('parameters.ini');
 $t->is($config->getParameters(), array('foo' => 'bar', 'bar' => '%foo%'), '->load() takes a single file name as its first argument');
 
-$loader = new IniFileLoader($fixturesPath.'/ini');
-$config = $loader->load(array('parameters.ini', 'parameters1.ini'));
-$t->is($config->getParameters(), array('foo' => 'foo', 'bar' => '%foo%', 'baz' => 'baz'), '->load() merges parameters from all given files');
-
 try
 {
   $loader->load('foo.ini');
diff --git a/tests/unit/Symfony/Components/DependencyInjection/Loader/XmlFileLoaderTest.php b/tests/unit/Symfony/Components/DependencyInjection/Loader/XmlFileLoaderTest.php
index d23f5732b8..364b56467e 100644
--- a/tests/unit/Symfony/Components/DependencyInjection/Loader/XmlFileLoaderTest.php
+++ b/tests/unit/Symfony/Components/DependencyInjection/Loader/XmlFileLoaderTest.php
@@ -16,7 +16,7 @@ use Symfony\Components\DependencyInjection\Definition;
 use Symfony\Components\DependencyInjection\Loader\Loader;
 use Symfony\Components\DependencyInjection\Loader\XmlFileLoader;
 
-$t = new LimeTest(44);
+$t = new LimeTest(40);
 
 $fixturesPath = realpath(__DIR__.'/../../../../../fixtures/Symfony/Components/DependencyInjection/');
 
@@ -24,20 +24,20 @@ require_once $fixturesPath.'/includes/ProjectExtension.php';
 
 class ProjectLoader extends XmlFileLoader
 {
-  public function getFilesAsXml(array $files)
+  public function loadFile($file)
   {
-    return parent::getFilesAsXml($files);
+    return parent::loadFile($file);
   }
 }
 
-// ->getFilesAsXml()
-$t->diag('->getFilesAsXml()');
+// ->loadFile()
+$t->diag('->loadFile()');
 
 $loader = new ProjectLoader($fixturesPath.'/ini');
 
 try
 {
-  $loader->getFilesAsXml(array('foo.xml'));
+  $loader->loadFile('foo.xml');
   $t->fail('->load() throws an InvalidArgumentException if the loaded file does not exist');
 }
 catch (InvalidArgumentException $e)
@@ -47,7 +47,7 @@ catch (InvalidArgumentException $e)
 
 try
 {
-  $loader->getFilesAsXml(array('parameters.ini'));
+  $loader->loadFile('parameters.ini');
   $t->fail('->load() throws an InvalidArgumentException if the loaded file is not a valid XML file');
 }
 catch (InvalidArgumentException $e)
@@ -59,7 +59,7 @@ $loader = new ProjectLoader($fixturesPath.'/xml');
 
 try
 {
-  $loader->getFilesAsXml(array('nonvalid.xml'));
+  $loader->loadFile('nonvalid.xml');
   $t->fail('->load() throws an InvalidArgumentException if the loaded file does not validate the XSD');
 }
 catch (InvalidArgumentException $e)
@@ -67,29 +67,23 @@ catch (InvalidArgumentException $e)
   $t->pass('->load() throws an InvalidArgumentException if the loaded file does not validate the XSD');
 }
 
-$xmls = $loader->getFilesAsXml(array('services1.xml'));
-$t->is(count($xmls), 1, '->getFilesAsXml() returns an array of simple xml objects');
-$t->is(key($xmls), realpath($fixturesPath.'/xml/services1.xml'), '->getFilesAsXml() returns an array where the keys are absolutes paths to the original XML file');
-$t->is(get_class(current($xmls)), 'Symfony\\Components\\DependencyInjection\\SimpleXMLElement', '->getFilesAsXml() returns an array where values are SimpleXMLElement objects');
+$xml = $loader->loadFile('services1.xml');
+$t->is(get_class($xml), 'Symfony\\Components\\DependencyInjection\\SimpleXMLElement', '->loadFile() returns an SimpleXMLElement object');
 
 // ->load() # parameters
 $t->diag('->load() # parameters');
 $loader = new ProjectLoader($fixturesPath.'/xml');
-$config = $loader->load(array('services2.xml'));
+$config = $loader->load('services2.xml');
 $t->is($config->getParameters(), array('a string', 'foo' => 'bar', 'values' => array(0, 'integer' => 4, 100 => null, 'true', true, false, 'on', 'off', 'float' => 1.3, 1000.3, 'a string', array('foo', 'bar')), 'foo_bar' => new Reference('foo_bar')), '->load() converts XML values to PHP ones');
 
-$loader = new ProjectLoader($fixturesPath.'/xml');
-$config = $loader->load(array('services2.xml', 'services3.xml'));
-$t->is($config->getParameters(), array('a string', 'foo' => 'foo', 'values' => array(true, false), 'foo_bar' => new Reference('foo_bar')), '->load() merges the first level of arguments when multiple files are loaded');
-
 // ->load() # imports
 $t->diag('->load() # imports');
-$config = $loader->load(array('services4.xml'));
+$config = $loader->load('services4.xml');
 $t->is($config->getParameters(), array('a string', 'foo' => 'bar', 'bar' => '%foo%', 'values' => array(true, false), 'foo_bar' => new Reference('foo_bar')), '->load() imports and merges imported files');
 
 // ->load() # anonymous services
 $t->diag('->load() # anonymous services');
-$config = $loader->load(array('services5.xml'));
+$config = $loader->load('services5.xml');
 $services = $config->getDefinitions();
 $t->is(count($services), 3, '->load() attributes unique ids to anonymous services');
 $args = $services['foo']->getArguments();
@@ -108,7 +102,7 @@ $t->is($inner->getClass(), 'BazClass', '->load() uses the same configuration as
 
 // ->load() # services
 $t->diag('->load() # services');
-$config = $loader->load(array('services6.xml'));
+$config = $loader->load('services6.xml');
 $services = $config->getDefinitions();
 $t->ok(isset($services['foo']), '->load() parses <service> elements');
 $t->is(get_class($services['foo']), 'Symfony\\Components\\DependencyInjection\\Definition', '->load() converts <service> element to Definition instances');
@@ -127,10 +121,6 @@ $aliases = $config->getAliases();
 $t->ok(isset($aliases['alias_for_foo']), '->load() parses <service> elements');
 $t->is($aliases['alias_for_foo'], 'foo', '->load() parses aliases');
 
-$config = $loader->load(array('services6.xml', 'services7.xml'));
-$services = $config->getDefinitions();
-$t->is($services['foo']->getClass(), 'BarClass', '->load() merges the services when multiple files are loaded');
-
 // ::convertDomElementToArray()
 $t->diag('::convertDomElementToArray()');
 $doc = new DOMDocument("1.0");
diff --git a/tests/unit/Symfony/Components/DependencyInjection/Loader/YamlFileLoaderTest.php b/tests/unit/Symfony/Components/DependencyInjection/Loader/YamlFileLoaderTest.php
index 7455e2b6e0..4f25ebca23 100644
--- a/tests/unit/Symfony/Components/DependencyInjection/Loader/YamlFileLoaderTest.php
+++ b/tests/unit/Symfony/Components/DependencyInjection/Loader/YamlFileLoaderTest.php
@@ -16,7 +16,7 @@ use Symfony\Components\DependencyInjection\Definition;
 use Symfony\Components\DependencyInjection\Loader\Loader;
 use Symfony\Components\DependencyInjection\Loader\YamlFileLoader;
 
-$t = new LimeTest(29);
+$t = new LimeTest(25);
 
 $fixturesPath = realpath(__DIR__.'/../../../../../fixtures/Symfony/Components/DependencyInjection/');
 
@@ -24,20 +24,20 @@ require_once $fixturesPath.'/includes/ProjectExtension.php';
 
 class ProjectLoader extends YamlFileLoader
 {
-  public function getFilesAsArray(array $files)
+  public function loadFile($file)
   {
-    return parent::getFilesAsArray($files);
+    return parent::loadFile($file);
   }
 }
 
-// ->getFilesAsArray()
-$t->diag('->getFilesAsArray()');
+// ->loadFile()
+$t->diag('->loadFile()');
 
 $loader = new ProjectLoader($fixturesPath.'/ini');
 
 try
 {
-  $loader->getFilesAsArray(array('foo.yml'));
+  $loader->loadFile('foo.yml');
   $t->fail('->load() throws an InvalidArgumentException if the loaded file does not exist');
 }
 catch (InvalidArgumentException $e)
@@ -47,7 +47,7 @@ catch (InvalidArgumentException $e)
 
 try
 {
-  $loader->getFilesAsArray(array('parameters.ini'));
+  $loader->loadFile('parameters.ini');
   $t->fail('->load() throws an InvalidArgumentException if the loaded file is not a valid YAML file');
 }
 catch (InvalidArgumentException $e)
@@ -61,7 +61,7 @@ foreach (array('nonvalid1', 'nonvalid2') as $fixture)
 {
   try
   {
-    $loader->getFilesAsArray(array($fixture.'.yml'));
+    $loader->loadFile($fixture.'.yml');
     $t->fail('->load() throws an InvalidArgumentException if the loaded file does not validate');
   }
   catch (InvalidArgumentException $e)
@@ -70,28 +70,20 @@ foreach (array('nonvalid1', 'nonvalid2') as $fixture)
   }
 }
 
-$yamls = $loader->getFilesAsArray(array('services1.yml'));
-$t->ok(is_array($yamls), '->getFilesAsArray() returns an array');
-$t->is(key($yamls), realpath($fixturesPath.'/yaml/services1.yml'), '->getFilesAsArray() returns an array where the keys are absolutes paths to the original YAML file');
-
 // ->load() # parameters
 $t->diag('->load() # parameters');
 $loader = new ProjectLoader($fixturesPath.'/yaml');
-$config = $loader->load(array('services2.yml'));
+$config = $loader->load('services2.yml');
 $t->is($config->getParameters(), array('foo' => 'bar', 'values' => array(true, false, 0, 1000.3), 'bar' => 'foo', 'foo_bar' => new Reference('foo_bar')), '->load() converts YAML keys to lowercase');
 
-$loader = new ProjectLoader($fixturesPath.'/yaml');
-$config = $loader->load(array('services2.yml', 'services3.yml'));
-$t->is($config->getParameters(), array('foo' => 'foo', 'values' => array(true, false), 'bar' => 'foo', 'foo_bar' => new Reference('foo_bar')), '->load() merges the first level of arguments when multiple files are loaded');
-
 // ->load() # imports
 $t->diag('->load() # imports');
-$config = $loader->load(array('services4.yml'));
+$config = $loader->load('services4.yml');
 $t->is($config->getParameters(), array('foo' => 'bar', 'bar' => '%foo%', 'values' => array(true, false), 'foo_bar' => new Reference('foo_bar')), '->load() imports and merges imported files');
 
 // ->load() # services
 $t->diag('->load() # services');
-$config = $loader->load(array('services6.yml'));
+$config = $loader->load('services6.yml');
 $services = $config->getDefinitions();
 $t->ok(isset($services['foo']), '->load() parses service elements');
 $t->is(get_class($services['foo']), 'Symfony\\Components\\DependencyInjection\\Definition', '->load() converts service element to Definition instances');
@@ -110,10 +102,6 @@ $aliases = $config->getAliases();
 $t->ok(isset($aliases['alias_for_foo']), '->load() parses aliases');
 $t->is($aliases['alias_for_foo'], 'foo', '->load() parses aliases');
 
-$config = $loader->load(array('services6.yml', 'services7.yml'));
-$services = $config->getDefinitions();
-$t->is($services['foo']->getClass(), 'BarClass', '->load() merges the services when multiple files are loaded');
-
 // extensions
 $t->diag('extensions');
 Loader::registerExtension(new ProjectExtension());