diff --git a/lib/public/files/fileinfo.php b/lib/public/files/fileinfo.php
index ece4409ca5..0279050b85 100644
--- a/lib/public/files/fileinfo.php
+++ b/lib/public/files/fileinfo.php
@@ -11,8 +11,17 @@ interface FileInfo {
 	const TYPE_FILE = 'file';
 	const TYPE_FOLDER = 'dir';
 
+	/*
+	 * @const \OCP\Files\FileInfo::SPACE_NOT_COMPUTED Return value for a not computed space value
+	 */
 	const SPACE_NOT_COMPUTED = -1;
+	/*
+	 * @const \OCP\Files\FileInfo::SPACE_UNKNOWN Return value for unknown space value
+	 */
 	const SPACE_UNKNOWN = -2;
+	/*
+	 * @const \OCP\Files\FileInfo::SPACE_UNKNOWN Return value for unlimited space
+	 */
 	const SPACE_UNLIMITED = -3;
 
 	/**