diff --git a/cura/Arranging/Arrange.py b/cura/Arranging/Arrange.py
index f8c6ae8a31..1027b39199 100644
--- a/cura/Arranging/Arrange.py
+++ b/cura/Arranging/Arrange.py
@@ -1,3 +1,6 @@
+# Copyright (c) 2018 Ultimaker B.V.
+# Cura is released under the terms of the LGPLv3 or higher.
+
 from UM.Scene.Iterator.DepthFirstIterator import DepthFirstIterator
 from UM.Logger import Logger
 from UM.Math.Vector import Vector
diff --git a/cura/Arranging/ArrangeObjectsAllBuildPlatesJob.py b/cura/Arranging/ArrangeObjectsAllBuildPlatesJob.py
index 1918b32907..252cef4e65 100644
--- a/cura/Arranging/ArrangeObjectsAllBuildPlatesJob.py
+++ b/cura/Arranging/ArrangeObjectsAllBuildPlatesJob.py
@@ -1,4 +1,4 @@
-# Copyright (c) 2017 Ultimaker B.V.
+# Copyright (c) 2018 Ultimaker B.V.
 # Cura is released under the terms of the LGPLv3 or higher.
 
 from UM.Application import Application
@@ -18,7 +18,7 @@ from cura.Arranging.ShapeArray import ShapeArray
 from typing import List
 
 
-##  Do an arrangements on a bunch of build plates
+##  Do arrangements on multiple build plates (aka builtiplexer)
 class ArrangeArray:
     def __init__(self, x: int, y: int, fixed_nodes: List[SceneNode]):
         self._x = x