diff --git a/golem_activity_session/i18n/fr.po b/golem_activity_session/i18n/fr.po
index 2858aa0..ba77502 100644
--- a/golem_activity_session/i18n/fr.po
+++ b/golem_activity_session/i18n/fr.po
@@ -6,8 +6,8 @@ msgid ""
 msgstr ""
 "Project-Id-Version: Odoo Server 8.0\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2016-08-03 14:49+0000\n"
-"PO-Revision-Date: 2016-08-03 14:49+0000\n"
+"POT-Creation-Date: 2016-08-03 15:20+0000\n"
+"PO-Revision-Date: 2016-08-03 15:20+0000\n"
 "Last-Translator: <>\n"
 "Language-Team: \n"
 "MIME-Version: 1.0\n"
@@ -473,17 +473,11 @@ msgid "Net Weight"
 msgstr "Net Weight"
 
 #. module: golem_activity_session
-#: code:addons/golem_activity_session/models/golem_activity_session.py:229
+#: code:addons/golem_activity_session/models/golem_activity_session.py:215
 #, python-format
 msgid "Number of places cannot be negative."
 msgstr "Le nombre de places ne peut pas être négatif"
 
-#. module: golem_activity_session
-#: code:addons/golem_activity_session/models/golem_activity_session.py:232
-#, python-format
-msgid "Overbooked places cannot be inferior than places"
-msgstr "Le nombre de places avec surcharge ne peut être inférieur aux places"
-
 #. module: golem_activity_session
 #: field:golem.activity.session,places:0
 msgid "Places"
@@ -623,7 +617,7 @@ msgid "Small-sized image of the product. It is automatically resized as a 64x64p
 msgstr "Small-sized image of the product. It is automatically resized as a 64x64px image, with aspect ratio preserved. Use this field anywhere a small image is required."
 
 #. module: golem_activity_session
-#: code:addons/golem_activity_session/models/golem_activity_session.py:212
+#: code:addons/golem_activity_session/models/golem_activity_session.py:205
 #, python-format
 msgid "Sorry, there is no more place !"
 msgstr "Désolé mais il n'y a plus de place disponible !"
diff --git a/golem_activity_session/i18n/golem_activity_session.pot b/golem_activity_session/i18n/golem_activity_session.pot
index 215cda8..6701809 100644
--- a/golem_activity_session/i18n/golem_activity_session.pot
+++ b/golem_activity_session/i18n/golem_activity_session.pot
@@ -6,8 +6,8 @@ msgid ""
 msgstr ""
 "Project-Id-Version: Odoo Server 8.0\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2016-08-03 14:49+0000\n"
-"PO-Revision-Date: 2016-08-03 14:49+0000\n"
+"POT-Creation-Date: 2016-08-03 15:20+0000\n"
+"PO-Revision-Date: 2016-08-03 15:20+0000\n"
 "Last-Translator: <>\n"
 "Language-Team: \n"
 "MIME-Version: 1.0\n"
@@ -470,17 +470,11 @@ msgid "Net Weight"
 msgstr ""
 
 #. module: golem_activity_session
-#: code:addons/golem_activity_session/models/golem_activity_session.py:229
+#: code:addons/golem_activity_session/models/golem_activity_session.py:215
 #, python-format
 msgid "Number of places cannot be negative."
 msgstr ""
 
-#. module: golem_activity_session
-#: code:addons/golem_activity_session/models/golem_activity_session.py:232
-#, python-format
-msgid "Overbooked places cannot be inferior than places"
-msgstr ""
-
 #. module: golem_activity_session
 #: field:golem.activity.session,places:0
 msgid "Places"
@@ -620,7 +614,7 @@ msgid "Small-sized image of the product. It is automatically resized as a 64x64p
 msgstr ""
 
 #. module: golem_activity_session
-#: code:addons/golem_activity_session/models/golem_activity_session.py:212
+#: code:addons/golem_activity_session/models/golem_activity_session.py:205
 #, python-format
 msgid "Sorry, there is no more place !"
 msgstr ""
diff --git a/golem_activity_session/models/golem_activity_session.py b/golem_activity_session/models/golem_activity_session.py
index 3ec31f0..3b87f13 100644
--- a/golem_activity_session/models/golem_activity_session.py
+++ b/golem_activity_session/models/golem_activity_session.py
@@ -188,21 +188,14 @@ class GolemActivitySession(models.Model):
                                                'after end of the period.'))
 
     places = fields.Integer('Places', default=0)
-    places_min = fields.Integer('Minimum places', default=0,
-                                help='Minimum places to maintain the session')
-    is_overbooked = fields.Boolean('Allow overbook?', default=False)
-    places_overbooked = fields.Integer('Places with overbook', default=0)
     places_remain = fields.Integer('Remaining places', store=True,
                                    compute='_compute_places_remain')
 
-    @api.depends('places', 'is_overbooked', 'places_overbooked', 'member_ids')
+    @api.depends('places', 'member_ids')
     def _compute_places_remain(self):
         for s in self:
             used = len(s.member_ids)
-            if not s.is_overbooked:
-                s.places_remain = s.places - used
-            else:
-                s.places_remain = s.places_overbooked - used
+            s.places_remain = s.places - used
 
     @api.constrains('places_remain')
     def _check_remaining_places(self):
@@ -212,22 +205,12 @@ class GolemActivitySession(models.Model):
                 emsg = _('Sorry, there is no more place !')
                 raise models.ValidationError(emsg)
 
-    @api.onchange('is_overbooked', 'places')
-    def onchange_is_overbooked(self):
-        for s in self:
-            if s.places and s.is_overbooked:
-                if not s.places_overbooked or (s.places_overbooked < s.places):
-                    s.places_overbooked = s.places + 1
-
-    @api.constrains('places', 'places_overbooked')
+    @api.constrains('places')
     def _check_places(self):
         """ Check integers are signed and overbooked to be superior than
         normal places """
         for v in self:
-            for f in ['places', 'places_overbooked']:
+            for f in ['places']:
                 if v[f] < 0:
                     emsg = _('Number of places cannot be negative.')
                     raise models.ValidationError(emsg)
-            if v.is_overbooked and (v.places_overbooked <= v.places):
-                emsg = _('Overbooked places cannot be inferior than places')
-                raise models.ValidationError(emsg)
diff --git a/golem_activity_session/views/golem_activity_view.xml b/golem_activity_session/views/golem_activity_view.xml
index b217a3e..1ff393f 100644
--- a/golem_activity_session/views/golem_activity_view.xml
+++ b/golem_activity_session/views/golem_activity_view.xml
@@ -50,10 +50,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
                 <field name="animator_id" />
                 <field name="type_of" />
                 <field name="places" />
-                <field name="places_min" />
-                <field name="is_overbooked" />
-                <field name="places_overbooked"
-                  attrs="{'invisible': [('is_overbooked', '=', False)]}" />
               </group>
               <group>
                 <field name="is_recurrent" />
@@ -107,8 +103,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
       <field name="name">Session list</field>
       <field name="model">golem.activity.session</field>
       <field name="arch" type="xml">
-        <tree colors="darkgrey: places_used &lt; places_min;
-          red: places_remain == 0;
+        <tree colors="red: places_remain == 0;
           orange: places_remain &lt;= 4;">
           <field name="is_recurrent" invisible="True" />
           <field name="season_id" />
@@ -120,8 +115,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
               attrs="{'invisible': [('is_recurrent', '=', True)]}" />
           <field name="places" invisible="True" />
           <field name="places_remain" string="Remain" />
-          <field name="places_used" invisible="True" />
-          <field name="places_min" invisible="True" />
           <field name="list_price" sum="True" />
         </tree>
       </field>