diff --git a/lib/private/files/cache/scanner.php b/lib/private/files/cache/scanner.php
index a8c069ee99..92a4c01841 100644
--- a/lib/private/files/cache/scanner.php
+++ b/lib/private/files/cache/scanner.php
@@ -122,7 +122,7 @@ class Scanner extends BasicEmitter {
 							$propagateETagChange = true;
 						}
 						// only reuse data if the file hasn't explicitly changed
-						if (isset($data['mtime']) && isset($cacheData['mtime']) && $data['mtime'] === $cacheData['mtime']) {
+						if (isset($data['storage_mtime']) && isset($cacheData['storage_mtime']) && $data['storage_mtime'] === $cacheData['storage_mtime']) {
 							if (($reuseExisting & self::REUSE_SIZE) && ($data['size'] === -1)) {
 								$data['size'] = $cacheData['size'];
 							}
diff --git a/tests/lib/files/cache/scanner.php b/tests/lib/files/cache/scanner.php
index 3f3a045377..3f5604b4d4 100644
--- a/tests/lib/files/cache/scanner.php
+++ b/tests/lib/files/cache/scanner.php
@@ -147,7 +147,7 @@ class Scanner extends \PHPUnit_Framework_TestCase {
 		$this->scanner->scan('');
 		$oldData = $this->cache->get('');
 		$this->storage->unlink('folder/bar.txt');
-		$this->cache->put('folder', array('mtime' => $this->storage->filemtime('folder')));
+		$this->cache->put('folder', array('mtime' => $this->storage->filemtime('folder'), 'storage_mtime' => $this->storage->filemtime('folder')));
 		$this->scanner->scan('', \OC\Files\Cache\Scanner::SCAN_SHALLOW, \OC\Files\Cache\Scanner::REUSE_SIZE);
 		$newData = $this->cache->get('');
 		$this->assertNotEquals($oldData['etag'], $newData['etag']);
diff --git a/tests/lib/files/cache/updater.php b/tests/lib/files/cache/updater.php
index 91e384e12a..48986149a7 100644
--- a/tests/lib/files/cache/updater.php
+++ b/tests/lib/files/cache/updater.php
@@ -88,7 +88,7 @@ class Updater extends \PHPUnit_Framework_TestCase {
 	public function testWrite() {
 		$textSize = strlen("dummy file data\n");
 		$imageSize = filesize(\OC::$SERVERROOT . '/core/img/logo.png');
-		$this->cache->put('foo.txt', array('mtime' => 100));
+		$this->cache->put('foo.txt', array('mtime' => 100, 'storage_mtime' => 150));
 		$rootCachedData = $this->cache->get('');
 		$this->assertEquals(3 * $textSize + $imageSize, $rootCachedData['size']);
 
diff --git a/tests/lib/files/view.php b/tests/lib/files/view.php
index 76a7fd5f1c..72a2f854cb 100644
--- a/tests/lib/files/view.php
+++ b/tests/lib/files/view.php
@@ -545,4 +545,21 @@ class View extends \PHPUnit_Framework_TestCase {
 			$this->assertContains($item['name'], $names);
 		}
 	}
+
+	public function testTouchNotSupported() {
+		$storage = new TemporaryNoTouch(array());
+		$scanner = $storage->getScanner();
+		\OC\Files\Filesystem::mount($storage, array(), '/test/');
+		$past = time() - 100;
+		$storage->file_put_contents('test', 'foobar');
+		$scanner->scan('');
+		$view = new \OC\Files\View('');
+		$info = $view->getFileInfo('/test/test');
+
+		$view->touch('/test/test', $past);
+		$scanner->scanFile('test', \OC\Files\Cache\Scanner::REUSE_ETAG);
+
+		$info2 = $view->getFileInfo('/test/test');
+		$this->assertEquals($info['etag'], $info2['etag']);
+	}
 }