Fix file size comparator return value

diff --git a/apps/files/lib/helper.php b/apps/files/lib/helper.php
index 2a5233b6542cd37734af8cd7b3c1e48279cf045d..e4bfcb4e9eebf0c0ab9eb9a01d0a485572a705e5 100644 (file)
--- a/apps/files/lib/helper.php
+++ b/apps/files/lib/helper.php
@@ -93,7 +93,7 @@ class Helper
        public static function compareSize($a, $b) {
                $aSize = $a->getSize();
                $bSize = $b->getSize();
-               return $aSize - $bSize;
+               return ($aSize < $bSize) ? -1 : 1;
        }
 
        /**