diff --git a/lib/public/files/storage.php b/lib/public/files/storage.php
index c14ca963f93344714d86f2765fefcf09b5ef85e7..41218996382c98865dd58b14df7520b4d43f07af 100644
--- a/lib/public/files/storage.php
+++ b/lib/public/files/storage.php
@@ -87,7 +87,7 @@ interface Storage {
 	public function opendir($path);
 
 	/**
-	 * see http://php.net/manual/en/function.is_dir.php
+	 * see http://php.net/manual/en/function.is-dir.php
 	 *
 	 * @param string $path
 	 * @return bool
@@ -96,7 +96,7 @@ interface Storage {
 	public function is_dir($path);
 
 	/**
-	 * see http://php.net/manual/en/function.is_file.php
+	 * see http://php.net/manual/en/function.is-file.php
 	 *
 	 * @param string $path
 	 * @return bool