diff --git a/GraphicsView/demo/icons/license.txt b/GraphicsView/demo/icons/license.txt
index ff11c043161..b9de5ecd798 100644
--- a/GraphicsView/demo/icons/license.txt
+++ b/GraphicsView/demo/icons/license.txt
@@ -3,3 +3,5 @@ The following files have been copied from Qt Free Edition version 4.4:
   fileOpen.png
   fileSave.png,
   fit-page-32.png 
+
+This Qt version was released under GPL-2 and GPL-3.
diff --git a/Installation/LICENSE b/Installation/LICENSE
index 677312c96e7..4a393c57241 100644
--- a/Installation/LICENSE
+++ b/Installation/LICENSE
@@ -33,6 +33,8 @@ licenses:
   (see LICENSE.LGPL).
 - OpenNL, in the directory "include/CGAL/OpenNL", is licensed under the LGPL
   (see LICENSE.LGPL).
+- ETH Zurich random forest algorithm, in the directory "CGAL/Classification/ETHZ",
+  is licensed under a MIT like license (see LICENSE.RFL).
 
 All other files that do not have an explicit copyright notice (e.g., all
 examples and some demos) are licensed under a very permissive license. The
diff --git a/Periodic_3_triangulation_3/demo/Periodic_3_triangulation_3/icons/license.txt b/Periodic_3_triangulation_3/demo/Periodic_3_triangulation_3/icons/license.txt
index 2cf4f5398aa..f2819459410 100644
--- a/Periodic_3_triangulation_3/demo/Periodic_3_triangulation_3/icons/license.txt
+++ b/Periodic_3_triangulation_3/demo/Periodic_3_triangulation_3/icons/license.txt
@@ -1,2 +1,4 @@
 The following file has been copied from Qt Free Edition version 4.4:
   fileOpen.png
+
+This Qt version was released under GPL-2 and GPL-3.