diff --git a/lib/Slic3r/GUI/AboutDialog.pm b/lib/Slic3r/GUI/AboutDialog.pm
index 6e53cc4566..3f946bb4c7 100644
--- a/lib/Slic3r/GUI/AboutDialog.pm
+++ b/lib/Slic3r/GUI/AboutDialog.pm
@@ -47,12 +47,13 @@ sub new {
'' .
'
' .
'' .
- 'Copyright © 2011-2014 Alessandro Ranellucci. All rights reserved. ' .
+ 'Copyright © 2011-2014 Alessandro Ranellucci.
' .
'Slic3r is licensed under the ' .
'GNU Affero General Public License, version 3.' .
'
' .
+ 'Contributions by Henrik Brix Andersen, Nicolas Dandrimont, Mark Hindess, Petr Ledvina, Y. Sapir, Mike Sheldrake and numerous others. ' .
+ 'Manual by Gary Hodgson. Inspired by the RepRap community.
' .
'Slic3r logo designed by Corey Daniels, Silk Icon Set designed by Mark James. ' .
- 'Contributions by Henrik Brix Andersen, Nicolas Dandrimont, Mark Hindess, Mike Sheldrake and numerous others.' .
'' .
'' .
'';