diff --git a/LICENSE.agpl-3.0.txt b/LICENSE.agpl-3.0.txt
new file mode 100644
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--- /dev/null
+++ b/LICENSE.agpl-3.0.txt
@@ -0,0 +1,661 @@
+GNU AFFERO GENERAL PUBLIC LICENSE
+   Version 3, 19 November 2007
+
+Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
+Everyone is permitted to copy and distribute verbatim copies
+of this license document, but changing it is not allowed.
+
+        Preamble
+
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+SUCH DAMAGES.
+
+17. Interpretation of Sections 15 and 16.
+
+If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+ END OF TERMS AND CONDITIONS
+
+How to Apply These Terms to Your New Programs
+
+If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+<one line to give the program's name and a brief idea of what it does.>
+Copyright (C) <year>  <name of author>
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU Affero General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU Affero General Public License for more details.
+
+You should have received a copy of the GNU Affero General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+If your software can interact with users remotely through a computer
+network, you should also make sure that it provides a way for users to
+get its source.  For example, if your program is a web application, its
+interface could display a "Source" link that leads users to an archive
+of the code.  There are many ways you could offer source, and different
+solutions will be better for different programs; see section 13 for the
+specific requirements.
+
+You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU AGPL, see
+<http://www.gnu.org/licenses/>.
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diff --git a/app/assets/images/marker-icon.png b/app/assets/images/marker-icon.png
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diff --git a/app/assets/images/pencil.png b/app/assets/images/pencil.png
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diff --git a/app/views/users/description/champs/_checkbox.html.haml b/app/views/users/description/champs/_checkbox.html.haml
index bae7b55ad..db7928656 100644
--- a/app/views/users/description/champs/_checkbox.html.haml
+++ b/app/views/users/description/champs/_checkbox.html.haml
@@ -1,2 +1 @@
-%input{type: 'hidden', name:"champs['#{champ.id}']", id: "champs_#{champ.id}", value: ''}
-%input{type: 'checkbox', style:'margin-left: 15px;', name:"champs['#{champ.id}']", id: "champs_#{champ.id}", checked: ('checked' if champ.value == 'on')}
+%input{type: 'checkbox', style:'margin-left: 15px;', name:"champs['#{champ.id}']", id: "champs_#{champ.id}", checked: ('checked' if champ.object.value == 'on')}
diff --git a/spec/factories/type_de_champ_public.rb b/spec/factories/type_de_champ_public.rb
index 937921d0d..3dad7603b 100644
--- a/spec/factories/type_de_champ_public.rb
+++ b/spec/factories/type_de_champ_public.rb
@@ -5,5 +5,9 @@ FactoryGirl.define do
     type_champ 'text'
     order_place 1
     mandatory false
+
+    trait :checkbox do
+      type_champ 'checkbox'
+    end
   end
 end
diff --git a/spec/views/users/description/champs/_render_list_champs.html.haml_spec.rb b/spec/views/users/description/champs/_render_list_champs.html.haml_spec.rb
new file mode 100644
index 000000000..a60d0e86b
--- /dev/null
+++ b/spec/views/users/description/champs/_render_list_champs.html.haml_spec.rb
@@ -0,0 +1,27 @@
+describe 'users/description/champs/render_list_champs.html.haml', type: :view do
+  let(:type_champ) { create(:type_de_champ_public, :checkbox) }
+
+  context "with a checkbox champ with value equals nil" do
+    let!(:champ_checkbox_checked) { create(:champ, type_de_champ: type_champ, value: nil) }
+
+    before do
+      render 'users/description/champs/render_list_champs.html.haml', champs: Champ.all, order_place: 0
+    end
+
+    it 'should not render a checked checkbox' do
+      expect(rendered).not_to have_css('input[type=checkbox][checked]')
+    end
+  end
+
+  context "with a checkbox champ with value equals 'on'" do
+    let!(:champ_checkbox_checked) { create(:champ, type_de_champ: type_champ, value: 'on') }
+
+    before do
+      render 'users/description/champs/render_list_champs.html.haml', champs: Champ.all, order_place: 0
+    end
+
+    it 'should render a checked checkbox' do
+      expect(rendered).to have_css('input[type=checkbox][checked]')
+    end
+  end
+end