diff --git a/lib/private/legacy/archive.php b/lib/private/Archive/Archive.php
similarity index 95%
rename from lib/private/legacy/archive.php
rename to lib/private/Archive/Archive.php
index 62512d1448..b5286968a2 100644
--- a/lib/private/legacy/archive.php
+++ b/lib/private/Archive/Archive.php
@@ -28,23 +28,25 @@
  *
  */
 
-abstract class OC_Archive{
+namespace OC\Archive;
+
+abstract class Archive{
 	/**
 	 * Open any of the supported archive types
 	 *
 	 * @param string $path
-	 * @return OC_Archive|void
+	 * @return Archive|void
 	 */
 	public static function open($path) {
 		$mime = \OC::$server->getMimeTypeDetector()->detect($path);
 
 		switch($mime) {
 			case 'application/zip':
-				return new OC_Archive_ZIP($path);
+				return new ZIP($path);
 			case 'application/x-gzip':
-				return new OC_Archive_TAR($path);
+				return new TAR($path);
 			case 'application/x-bzip2':
-				return new OC_Archive_TAR($path);
+				return new TAR($path);
 		}
 	}
 
diff --git a/lib/private/archive/tar.php b/lib/private/Archive/TAR.php
similarity index 94%
rename from lib/private/archive/tar.php
rename to lib/private/Archive/TAR.php
index 20e2e05f23..d783e53d40 100644
--- a/lib/private/archive/tar.php
+++ b/lib/private/Archive/TAR.php
@@ -30,7 +30,9 @@
  *
  */
 
-class OC_Archive_TAR extends OC_Archive {
+namespace OC\Archive;
+
+class TAR extends Archive {
 	const PLAIN = 0;
 	const GZIP = 1;
 	const BZIP = 2;
@@ -39,7 +41,7 @@ class OC_Archive_TAR extends OC_Archive {
 	private $cachedHeaders;
 
 	/**
-	 * @var Archive_Tar tar
+	 * @var \Archive_Tar tar
 	 */
 	private $tar = null;
 	private $path;
@@ -50,7 +52,7 @@ class OC_Archive_TAR extends OC_Archive {
 	function __construct($source) {
 		$types = array(null, 'gz', 'bz2');
 		$this->path = $source;
-		$this->tar = new Archive_Tar($source, $types[self::getTarType($source)]);
+		$this->tar = new \Archive_Tar($source, $types[self::getTarType($source)]);
 	}
 
 	/**
@@ -137,13 +139,13 @@ class OC_Archive_TAR extends OC_Archive {
 	 */
 	function rename($source, $dest) {
 		//no proper way to delete, rename entire archive, rename file and remake archive
-		$tmp = OCP\Files::tmpFolder();
+		$tmp = \OCP\Files::tmpFolder();
 		$this->tar->extract($tmp);
 		rename($tmp . $source, $tmp . $dest);
 		$this->tar = null;
 		unlink($this->path);
 		$types = array(null, 'gz', 'bz');
-		$this->tar = new Archive_Tar($this->path, $types[self::getTarType($this->path)]);
+		$this->tar = new \Archive_Tar($this->path, $types[self::getTarType($this->path)]);
 		$this->tar->createModify(array($tmp), '', $tmp . '/');
 		$this->fileList = false;
 		$this->cachedHeaders = false;
@@ -256,7 +258,7 @@ class OC_Archive_TAR extends OC_Archive {
 	 * @return bool
 	 */
 	function extractFile($path, $dest) {
-		$tmp = OCP\Files::tmpFolder();
+		$tmp = \OCP\Files::tmpFolder();
 		if (!$this->fileExists($path)) {
 			return false;
 		}
@@ -268,7 +270,7 @@ class OC_Archive_TAR extends OC_Archive {
 		if ($success) {
 			rename($tmp . $path, $dest);
 		}
-		OCP\Files::rmdirr($tmp);
+		\OCP\Files::rmdirr($tmp);
 		return $success;
 	}
 
@@ -324,9 +326,9 @@ class OC_Archive_TAR extends OC_Archive {
 		$this->fileList = false;
 		$this->cachedHeaders = false;
 		//no proper way to delete, extract entire archive, delete file and remake archive
-		$tmp = OCP\Files::tmpFolder();
+		$tmp = \OCP\Files::tmpFolder();
 		$this->tar->extract($tmp);
-		OCP\Files::rmdirr($tmp . $path);
+		\OCP\Files::rmdirr($tmp . $path);
 		$this->tar = null;
 		unlink($this->path);
 		$this->reopen();
@@ -347,7 +349,7 @@ class OC_Archive_TAR extends OC_Archive {
 		} else {
 			$ext = '';
 		}
-		$tmpFile = OCP\Files::tmpFile($ext);
+		$tmpFile = \OCP\Files::tmpFile($ext);
 		if ($this->fileExists($path)) {
 			$this->extractFile($path, $tmpFile);
 		} elseif ($mode == 'r' or $mode == 'rb') {
@@ -383,6 +385,6 @@ class OC_Archive_TAR extends OC_Archive {
 			$this->tar = null;
 		}
 		$types = array(null, 'gz', 'bz');
-		$this->tar = new Archive_Tar($this->path, $types[self::getTarType($this->path)]);
+		$this->tar = new \Archive_Tar($this->path, $types[self::getTarType($this->path)]);
 	}
 }
diff --git a/lib/private/archive/zip.php b/lib/private/Archive/ZIP.php
similarity index 94%
rename from lib/private/archive/zip.php
rename to lib/private/Archive/ZIP.php
index 0d8d3b7ce7..2bc17507d3 100644
--- a/lib/private/archive/zip.php
+++ b/lib/private/Archive/ZIP.php
@@ -27,9 +27,11 @@
  *
  */
 
-class OC_Archive_ZIP extends OC_Archive{
+namespace OC\Archive;
+
+class ZIP extends Archive{
 	/**
-	 * @var ZipArchive zip
+	 * @var \ZipArchive zip
 	 */
 	private $zip=null;
 	private $path;
@@ -39,10 +41,10 @@ class OC_Archive_ZIP extends OC_Archive{
 	 */
 	function __construct($source) {
 		$this->path=$source;
-		$this->zip=new ZipArchive();
-		if($this->zip->open($source, ZipArchive::CREATE)) {
+		$this->zip=new \ZipArchive();
+		if($this->zip->open($source, \ZipArchive::CREATE)) {
 		}else{
-			OCP\Util::writeLog('files_archive', 'Error while opening archive '.$source, OCP\Util::WARN);
+			\OCP\Util::writeLog('files_archive', 'Error while opening archive '.$source, \OCP\Util::WARN);
 		}
 	}
 	/**
@@ -193,7 +195,7 @@ class OC_Archive_ZIP extends OC_Archive{
 			}else{
 				$ext='';
 			}
-			$tmpFile=OCP\Files::tmpFile($ext);
+			$tmpFile=\OCP\Files::tmpFile($ext);
 			\OC\Files\Stream\Close::registerCallback($tmpFile, array($this, 'writeBack'));
 			if($this->fileExists($path)) {
 				$this->extractFile($path, $tmpFile);
diff --git a/lib/private/Installer.php b/lib/private/Installer.php
index 643590ae22..8ecc92e134 100644
--- a/lib/private/Installer.php
+++ b/lib/private/Installer.php
@@ -300,7 +300,7 @@ class Installer {
 		$extractDir = \OC::$server->getTempManager()->getTemporaryFolder();
 		OC_Helper::rmdirr($extractDir);
 		mkdir($extractDir);
-		if($archive=\OC_Archive::open($path)) {
+		if($archive=\OC\Archive\Archive::open($path)) {
 			$archive->extract($extractDir);
 		} else {
 			OC_Helper::rmdirr($extractDir);
diff --git a/tests/lib/archive/tar.php b/tests/lib/archive/tar.php
index 43157e2054..2d20bb4c3b 100644
--- a/tests/lib/archive/tar.php
+++ b/tests/lib/archive/tar.php
@@ -6,6 +6,8 @@
  * See the COPYING-README file.
  */
 
+use OC\Archive\TAR;
+
 class Test_Archive_TAR extends Test_Archive {
 	protected function setUp() {
 		parent::setUp();
@@ -17,10 +19,10 @@ class Test_Archive_TAR extends Test_Archive {
 
 	protected function getExisting() {
 		$dir = OC::$SERVERROOT . '/tests/data';
-		return new OC_Archive_TAR($dir . '/data.tar.gz');
+		return new TAR($dir . '/data.tar.gz');
 	}
 
 	protected function getNew() {
-		return new OC_Archive_TAR(OCP\Files::tmpFile('.tar.gz'));
+		return new TAR(OCP\Files::tmpFile('.tar.gz'));
 	}
 }
diff --git a/tests/lib/archive/zip.php b/tests/lib/archive/zip.php
index 09ea5d7d27..2f4c9cace1 100644
--- a/tests/lib/archive/zip.php
+++ b/tests/lib/archive/zip.php
@@ -6,6 +6,8 @@
  * See the COPYING-README file.
  */
 
+use OC\Archive\ZIP;
+
 class Test_Archive_ZIP extends Test_Archive {
 	protected function setUp() {
 		parent::setUp();
@@ -17,10 +19,10 @@ class Test_Archive_ZIP extends Test_Archive {
 
 	protected function getExisting() {
 		$dir = OC::$SERVERROOT . '/tests/data';
-		return new OC_Archive_ZIP($dir . '/data.zip');
+		return new ZIP($dir . '/data.zip');
 	}
 
 	protected function getNew() {
-		return new OC_Archive_ZIP(OCP\Files::tmpFile('.zip'));
+		return new ZIP(OCP\Files::tmpFile('.zip'));
 	}
 }