diff --git a/lib/files/filesystem.php b/lib/files/filesystem.php
index 875a9d6c5e..36a21288b4 100644
--- a/lib/files/filesystem.php
+++ b/lib/files/filesystem.php
@@ -221,9 +221,9 @@ class Filesystem {
 
 		// Load system mount points
 		if (is_file(\OC::$SERVERROOT . '/config/mount.php') or is_file(\OC::$SERVERROOT . '/config/mount.json')) {
-			if(is_file(\OC::$SERVERROOT . '/config/mount.json')){
+			if (is_file(\OC::$SERVERROOT . '/config/mount.json')) {
 				$mountConfig = json_decode(file_get_contents(\OC::$SERVERROOT . '/config/mount.json'), true);
-			}elseif(is_file(\OC::$SERVERROOT . '/config/mount.php')){
+			} elseif (is_file(\OC::$SERVERROOT . '/config/mount.php')) {
 				$mountConfig = $parser->parsePHP(file_get_contents(\OC::$SERVERROOT . '/config/mount.php'));
 			}
 			if (isset($mountConfig['global'])) {
@@ -262,9 +262,9 @@ class Filesystem {
 		$root = \OC_User::getHome($user);
 		self::mount('\OC\Files\Storage\Local', array('datadir' => $root), $user);
 		if (is_file($root . '/mount.php') or is_file($root . '/mount.json')) {
-			if (is_file($root . '/mount.json')){
+			if (is_file($root . '/mount.json')) {
 				$mountConfig = json_decode(file_get_contents($root . '/mount.json'), true);
-			} elseif (is_file($root . '/mount.php')){
+			} elseif (is_file($root . '/mount.php')) {
 				$mountConfig = $parser->parsePHP(file_get_contents($root . '/mount.php'));
 			}
 			if (isset($mountConfig['user'][$user])) {
@@ -389,20 +389,28 @@ class Filesystem {
 	 * @param array $data from hook
 	 */
 	static public function isBlacklisted($data) {
-		$blacklist = \OC_Config::getValue('blacklisted_files', array('.htaccess'));
 		if (isset($data['path'])) {
 			$path = $data['path'];
 		} else if (isset($data['newpath'])) {
 			$path = $data['newpath'];
 		}
 		if (isset($path)) {
-			$filename = strtolower(basename($path));
-			if (in_array($filename, $blacklist)) {
+			if (self::isFileBlacklisted($path)) {
 				$data['run'] = false;
 			}
 		}
 	}
 
+	/**
+	 * @param string $filename
+	 * @return bool
+	 */
+	static public function isFileBlacklisted($filename) {
+		$blacklist = \OC_Config::getValue('blacklisted_files', array('.htaccess'));
+		$filename = strtolower(basename($filename));
+		return (in_array($filename, $blacklist));
+	}
+
 	/**
 	 * following functions are equivalent to their php builtin equivalents for arguments/return values.
 	 */