diff --git a/db_structure.xml b/db_structure.xml
index dce90697b1..b96d483641 100644
--- a/db_structure.xml
+++ b/db_structure.xml
@@ -280,6 +280,14 @@
 				<length>4</length>
 			</field>
 
+			<field>
+				<name>storage_mtime</name>
+				<type>integer</type>
+				<default></default>
+				<notnull>true</notnull>
+				<length>4</length>
+			</field>
+
 			<field>
 				<name>encrypted</name>
 				<type>integer</type>
diff --git a/lib/files/cache/cache.php b/lib/files/cache/cache.php
index 8f5c9643be..0617471079 100644
--- a/lib/files/cache/cache.php
+++ b/lib/files/cache/cache.php
@@ -107,7 +107,7 @@ class Cache {
 			$params = array($file);
 		}
 		$query = \OC_DB::prepare(
-			'SELECT `fileid`, `storage`, `path`, `parent`, `name`, `mimetype`, `mimepart`, `size`, `mtime`, `encrypted`, `etag`
+			'SELECT `fileid`, `storage`, `path`, `parent`, `name`, `mimetype`, `mimepart`, `size`, `mtime`, `storage_mtime`, `encrypted`, `etag`
 			 FROM `*PREFIX*filecache` ' . $where);
 		$result = $query->execute($params);
 		$data = $result->fetchRow();
@@ -126,6 +126,9 @@ class Cache {
 			$data['storage'] = $this->storageId;
 			$data['mimetype'] = $this->getMimetype($data['mimetype']);
 			$data['mimepart'] = $this->getMimetype($data['mimepart']);
+			if ($data['storage_mtime'] == 0) {
+				$data['storage_mtime'] = $data['mtime'];
+			}
 		}
 
 		return $data;
@@ -141,13 +144,16 @@ class Cache {
 		$fileId = $this->getId($folder);
 		if ($fileId > -1) {
 			$query = \OC_DB::prepare(
-				'SELECT `fileid`, `storage`, `path`, `parent`, `name`, `mimetype`, `mimepart`, `size`, `mtime`, `encrypted`, `etag`
+				'SELECT `fileid`, `storage`, `path`, `parent`, `name`, `mimetype`, `mimepart`, `size`, `mtime`, `storage_mtime`, `encrypted`, `etag`
 			 	 FROM `*PREFIX*filecache` WHERE parent = ? ORDER BY `name` ASC');
 			$result = $query->execute(array($fileId));
 			$files = $result->fetchAll();
 			foreach ($files as &$file) {
 				$file['mimetype'] = $this->getMimetype($file['mimetype']);
 				$file['mimepart'] = $this->getMimetype($file['mimepart']);
+				if ($file['storage_mtime'] == 0) {
+					$file['storage_mtime'] = $file['mtime'];
+				}
 			}
 			return $files;
 		} else {
@@ -224,7 +230,7 @@ class Cache {
 	 * @return array
 	 */
 	function buildParts(array $data) {
-		$fields = array('path', 'parent', 'name', 'mimetype', 'size', 'mtime', 'encrypted', 'etag');
+		$fields = array('path', 'parent', 'name', 'mimetype', 'size', 'mtime', 'storage_mtime', 'encrypted', 'etag');
 		$params = array();
 		$queryParts = array();
 		foreach ($data as $name => $value) {
@@ -236,6 +242,11 @@ class Cache {
 					$params[] = $this->getMimetypeId(substr($value, 0, strpos($value, '/')));
 					$queryParts[] = '`mimepart`';
 					$value = $this->getMimetypeId($value);
+				} elseif ($name === 'storage_mtime') {
+					if (!isset($data['mtime'])) {
+						$params[] = $value;
+						$queryParts[] = '`mtime`';
+					}
 				}
 				$params[] = $value;
 				$queryParts[] = '`' . $name . '`';
diff --git a/lib/files/cache/scanner.php b/lib/files/cache/scanner.php
index b99dea23cb..a98953b42a 100644
--- a/lib/files/cache/scanner.php
+++ b/lib/files/cache/scanner.php
@@ -51,6 +51,7 @@ class Scanner {
 			$data['size'] = $this->storage->filesize($path);
 		}
 		$data['etag'] = $this->storage->getETag($path);
+		$data['storage_mtime'] = $data['mtime'];
 		return $data;
 	}
 
diff --git a/lib/files/cache/watcher.php b/lib/files/cache/watcher.php
index 31059ec7f5..8bfd4602f3 100644
--- a/lib/files/cache/watcher.php
+++ b/lib/files/cache/watcher.php
@@ -43,7 +43,7 @@ class Watcher {
 	 */
 	public function checkUpdate($path) {
 		$cachedEntry = $this->cache->get($path);
-		if ($this->storage->hasUpdated($path, $cachedEntry['mtime'])) {
+		if ($this->storage->hasUpdated($path, $cachedEntry['storage_mtime'])) {
 			if ($this->storage->is_dir($path)) {
 				$this->scanner->scan($path, Scanner::SCAN_SHALLOW);
 			} else {
diff --git a/lib/files/view.php b/lib/files/view.php
index f35e1e3dc1..bc6b80c505 100644
--- a/lib/files/view.php
+++ b/lib/files/view.php
@@ -251,8 +251,11 @@ class View {
 		if (!$this->file_exists($path)) {
 			$hooks[] = 'write';
 		}
-
-		return $this->basicOperation('touch', $path, $hooks, $mtime);
+		$result = $this->basicOperation('touch', $path, $hooks, $mtime);
+		if (!$result) { //if native touch fails, we emulate it by changing the mtime in the cache
+			$this->putFileInfo($path, array('mtime' => $mtime));
+		}
+		return true;
 	}
 
 	public function file_get_contents($path) {
diff --git a/lib/util.php b/lib/util.php
index f30cdf6a53..48c224a303 100755
--- a/lib/util.php
+++ b/lib/util.php
@@ -77,7 +77,7 @@ class OC_Util {
 	public static function getVersion() {
 		// hint: We only can count up. Reset minor/patchlevel when
 		// updating major/minor version number.
-		return array(5, 80, 02);
+		return array(5, 80, 03);
 	}
 
 	/**
diff --git a/tests/lib/files/cache/cache.php b/tests/lib/files/cache/cache.php
index 4051a6e234..1612a67383 100644
--- a/tests/lib/files/cache/cache.php
+++ b/tests/lib/files/cache/cache.php
@@ -211,6 +211,23 @@ class Cache extends \PHPUnit_Framework_TestCase {
 		$this->assertEquals(array($storageId, 'foo'), \OC\Files\Cache\Cache::getById($id));
 	}
 
+	function testStorageMTime() {
+		$data = array('size' => 1000, 'mtime' => 20, 'mimetype' => 'foo/file');
+		$this->cache->put('foo', $data);
+		$cachedData = $this->cache->get('foo');
+		$this->assertEquals($data['mtime'], $cachedData['storage_mtime']);//if no storage_mtime is saved, mtime should be used
+
+		$this->cache->put('foo', array('storage_mtime' => 30));//when setting storage_mtime, mtime is also set
+		$cachedData = $this->cache->get('foo');
+		$this->assertEquals(30, $cachedData['storage_mtime']);
+		$this->assertEquals(30, $cachedData['mtime']);
+
+		$this->cache->put('foo', array('mtime' => 25));//setting mtime does not change storage_mtime
+		$cachedData = $this->cache->get('foo');
+		$this->assertEquals(30, $cachedData['storage_mtime']);
+		$this->assertEquals(25, $cachedData['mtime']);
+	}
+
 	function testLongId() {
 		$storage = new LongId(array());
 		$cache = $storage->getCache();
diff --git a/tests/lib/files/cache/watcher.php b/tests/lib/files/cache/watcher.php
index 8ef6ab44d1..e43c86ed43 100644
--- a/tests/lib/files/cache/watcher.php
+++ b/tests/lib/files/cache/watcher.php
@@ -35,7 +35,7 @@ class Watcher extends \PHPUnit_Framework_TestCase {
 		$updater = $storage->getWatcher();
 
 		//set the mtime to the past so it can detect an mtime change
-		$cache->put('', array('mtime' => 10));
+		$cache->put('', array('storage_mtime' => 10));
 
 		$this->assertTrue($cache->inCache('folder/bar.txt'));
 		$this->assertTrue($cache->inCache('folder/bar2.txt'));
@@ -47,14 +47,14 @@ class Watcher extends \PHPUnit_Framework_TestCase {
 		$cachedData = $cache->get('bar.test');
 		$this->assertEquals(3, $cachedData['size']);
 
-		$cache->put('bar.test', array('mtime' => 10));
+		$cache->put('bar.test', array('storage_mtime' => 10));
 		$storage->file_put_contents('bar.test', 'test data');
 
 		$updater->checkUpdate('bar.test');
 		$cachedData = $cache->get('bar.test');
 		$this->assertEquals(9, $cachedData['size']);
 
-		$cache->put('folder', array('mtime' => 10));
+		$cache->put('folder', array('storage_mtime' => 10));
 
 		$storage->unlink('folder/bar2.txt');
 		$updater->checkUpdate('folder');
@@ -69,7 +69,7 @@ class Watcher extends \PHPUnit_Framework_TestCase {
 		$updater = $storage->getWatcher();
 
 		//set the mtime to the past so it can detect an mtime change
-		$cache->put('', array('mtime' => 10));
+		$cache->put('', array('storage_mtime' => 10));
 
 		$storage->unlink('foo.txt');
 		$storage->rename('folder', 'foo.txt');
@@ -85,7 +85,7 @@ class Watcher extends \PHPUnit_Framework_TestCase {
 		$updater = $storage->getWatcher();
 
 		//set the mtime to the past so it can detect an mtime change
-		$cache->put('foo.txt', array('mtime' => 10));
+		$cache->put('foo.txt', array('storage_mtime' => 10));
 
 		$storage->unlink('foo.txt');
 		$storage->rename('folder', 'foo.txt');
diff --git a/tests/lib/files/view.php b/tests/lib/files/view.php
index a064e44f3e..af97761bbb 100644
--- a/tests/lib/files/view.php
+++ b/tests/lib/files/view.php
@@ -7,6 +7,12 @@
 
 namespace Test\Files;
 
+class TemporaryNoTouch extends \OC\Files\Storage\Temporary {
+	public function touch($path, $mtime = null) {
+		return false;
+	}
+}
+
 class View extends \PHPUnit_Framework_TestCase {
 	/**
 	 * @var \OC\Files\Storage\Storage[] $storages;
@@ -220,7 +226,7 @@ class View extends \PHPUnit_Framework_TestCase {
 		$cachedData = $rootView->getFileInfo('foo.txt');
 		$this->assertEquals(16, $cachedData['size']);
 
-		$rootView->putFileInfo('foo.txt', array('mtime' => 10));
+		$rootView->putFileInfo('foo.txt', array('storage_mtime' => 10));
 		$storage1->file_put_contents('foo.txt', 'foo');
 		clearstatcache();
 
@@ -228,12 +234,36 @@ class View extends \PHPUnit_Framework_TestCase {
 		$this->assertEquals(3, $cachedData['size']);
 	}
 
+	function testTouch() {
+		$storage = $this->getTestStorage(true, '\Test\Files\TemporaryNoTouch');
+
+		\OC\Files\Filesystem::mount($storage, array(), '/');
+
+		$rootView = new \OC\Files\View('');
+		$oldCachedData = $rootView->getFileInfo('foo.txt');
+
+		$rootView->touch('foo.txt', 500);
+
+		$cachedData = $rootView->getFileInfo('foo.txt');
+		$this->assertEquals(500, $cachedData['mtime']);
+		$this->assertEquals($oldCachedData['storage_mtime'], $cachedData['storage_mtime']);
+
+		$rootView->putFileInfo('foo.txt', array('storage_mtime' => 1000)); //make sure the watcher detects the change
+		$rootView->file_put_contents('foo.txt', 'asd');
+		$cachedData = $rootView->getFileInfo('foo.txt');
+		$this->assertGreaterThanOrEqual($cachedData['mtime'], $oldCachedData['mtime']);
+		$this->assertEquals($cachedData['storage_mtime'], $cachedData['mtime']);
+	}
+
 	/**
 	 * @param bool $scan
 	 * @return \OC\Files\Storage\Storage
 	 */
-	private function getTestStorage($scan = true) {
-		$storage = new \OC\Files\Storage\Temporary(array());
+	private function getTestStorage($scan = true, $class = '\OC\Files\Storage\Temporary') {
+		/**
+		 * @var \OC\Files\Storage\Storage $storage
+		 */
+		$storage = new $class(array());
 		$textData = "dummy file data\n";
 		$imgData = file_get_contents(\OC::$SERVERROOT . '/core/img/logo.png');
 		$storage->mkdir('folder');