diff --git a/LICENSE b/LICENSE
index f19bb3f608cd608db0184511730436fdf43d1543..aeb8df4a811c7f2235eb1652199b90b6209c2baf 100644
--- a/LICENSE
+++ b/LICENSE
@@ -15,8 +15,8 @@ however invalidate any other reasons why the executable file might be
 covered by the GNU Lesser General Public License.
 
 Icon sets for the graphical interface of Why3 are subject to specific
-licenses, some of them may forbid commercial usage. See details in
-subdirectories share/icons/*
+licenses, some of them may forbid commercial usage. These specific
+licenses are detailed in files share/icons/*/*.txt
 
 ======================================================================
 
diff --git a/Makefile.in b/Makefile.in
index ee4e74a8effcf82a7b762b4ea34b128386b35e01..02928206be84513f1cfab4b7a6f4ba045d259f3a 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -276,11 +276,12 @@ endif
 	cp -f modules/*.mlw $(DATADIR)/why3/modules
 	cp -f modules/mach/*.mlw $(DATADIR)/why3/modules/mach
 	cp -f drivers/*.drv drivers/*.gen $(DATADIR)/why3/drivers
+	cp -f LICENSE $(DATADIR)/why3/
 	cp -f share/provers-detection-data.conf $(DATADIR)/why3/
 	cp -f share/images/icons.rc $(DATADIR)/why3/images
 	cp -f share/images/*.png $(DATADIR)/why3/images
-	cp -f share/images/boomy/*.png $(DATADIR)/why3/images/boomy
-	cp -f share/images/fatcow/*.png $(DATADIR)/why3/images/fatcow
+	cp -f share/images/boomy/* $(DATADIR)/why3/images/boomy
+	cp -f share/images/fatcow/* $(DATADIR)/why3/images/fatcow
 	cp -f share/why3session.dtd $(DATADIR)/why3
 	cp -f share/Makefile.config $(DATADIR)/why3
 	cp -rf share/javascript $(DATADIR)/why3/javascript
diff --git a/share/images/fatcow/readme-fatcow.txt b/share/images/fatcow/readme-fatcow.txt
new file mode 100644
index 0000000000000000000000000000000000000000..0b11cd51d86c93364e93c76ea083a7a9aa012de5
--- /dev/null
+++ b/share/images/fatcow/readme-fatcow.txt
@@ -0,0 +1,31 @@
+Free FatCow-Farm Fresh Icons
+http://www.fatcow.com/free-icons
+
+FatCow Farm-Fresh final release (3926 icons, 5 parts):
+- fatcow-hosting-icons-3.9.2.zip default (10.9 Mb)
+- fatcow-hosting-icons-3.9.2-color.zip (11.1 Mb)
+- fatcow-hosting-icons-3.9.2-grey.zip (6.9 Mb)
+- fatcow-hosting-icons-3.9.2-ico.zip (8.9 Mb)
+- fatcow-hosting-icons-3.9.2-all.zip (30.7 Mb)
+- fatcow-hosting-icons-3.9.2-ai-src.zip (2.82 !Gb)
+
+These icons are licensed under a Creative Commons Attribution 3.0 License.
+http://creativecommons.org/licenses/by/3.0/us/ if you do not know how to link
+back to FatCow's website, you can ask https://plus.google.com/+MarcisGasuns
+Biggest icon set drawn by a single designer (in pixel smooth style) worldwide.
+
+We are unavailable for custom icon design work. The project is
+closed (April 2014) and we do not plan to draw more metaphors.
+http://twitter.com/FatCow
+http://plus.google.com/+FatCow
+http://www.facebook.com/FatCow
+
+---------------------------------------------------------------------------------
+
+© Copyright 2009-2014 FatCow Web Hosting. All rights reserved.
+http://www.fatcow.com
+
+All other trademarks and copyrights
+are property of their respective owners.
+
+---------------------------------------------------------------------------------
diff --git a/src/ide/gconfig.ml b/src/ide/gconfig.ml
index 604b051819b27bd5718c777c193577e5b3636f14..c8fcbb72eec908136a9ba6ad2e450569834307d6 100644
--- a/src/ide/gconfig.ml
+++ b/src/ide/gconfig.ml
@@ -581,7 +581,7 @@ let show_about_window () =
                 "Makarius Wenzel";
                ]
       ~copyright:"Copyright 2010-2015 Inria, CNRS, Paris-Sud University"
-      ~license:"GNU Lesser General Public License version 2.1"
+      ~license:("See file " ^ Filename.concat Config.datadir "LICENSE")
       ~website:"http://why3.lri.fr"
       ~website_label:"http://why3.lri.fr"
       ~version:Config.version