diff --git a/docs/index.md b/docs/index.md
old mode 100644
new mode 100755
index 2f71823f7..e8967ff7c
--- a/docs/index.md
+++ b/docs/index.md
@@ -46,4 +46,16 @@ For the time being everything is restricted with all rights reserved:
 //
 // Copyright (C) 2017 ETH Zurich, University of Bologna
 // All rights reserved.
+//
+// This code is under development and not yet released to the public.
+// Until it is released, the code is under the copyright of ETH Zurich and
+// the University of Bologna, and may contain confidential and/or unpublished
+// work. Any reuse/redistribution is strictly forbidden without written
+// permission from ETH Zurich.
+//
+// Bug fixes and contributions will eventually be released under the
+// SolderPad open hardware license in the context of the PULP platform
+// (http://www.pulp-platform.org), under the copyright of ETH Zurich and the
+// University of Bologna.
+//
 ```