diff --git a/golem_season/i18n/fr.po b/golem_season/i18n/fr.po
index e340937..64e2888 100644
--- a/golem_season/i18n/fr.po
+++ b/golem_season/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: 2016-07-11 17:19+0000\n"
-"PO-Revision-Date: 2016-07-11 17:19+0000\n"
+"POT-Creation-Date: 2016-07-13 15:46+0000\n"
+"PO-Revision-Date: 2016-07-13 15:46+0000\n"
 "Last-Translator: <>\n"
 "Language-Team: \n"
 "MIME-Version: 1.0\n"
@@ -58,7 +58,7 @@ msgid "Display Name"
 msgstr "Nom affiché"
 
 #. module: golem_season
-#: code:addons/golem_season/models/golem_season.py:49
+#: code:addons/golem_season/models/golem_season.py:51
 #, python-format
 msgid "End of the period is in range of an existing period."
 msgstr "La fin de la période est en conflit avec une période existante."
@@ -120,19 +120,26 @@ msgid "Season name"
 msgstr "Nom de la saison"
 
 #. module: golem_season
-#: code:addons/golem_season/models/golem_season.py:39
+#: code:addons/golem_season/models/golem_season.py:41
 #, python-format
 msgid "Start of the period cannot be after end of the period."
 msgstr "Le début de la période ne peut être postérieur à sa fin."
 
 #. module: golem_season
-#: code:addons/golem_season/models/golem_season.py:45
+#: code:addons/golem_season/models/golem_season.py:47
 #, python-format
 msgid "Start of the period is in range of an existing period."
 msgstr "Le début de la période est en conflit avec une période existante."
 
 #. module: golem_season
-#: code:addons/golem_season/models/golem_season.py:75
+#: code:addons/golem_season/models/golem_season.py:27
+#: sql_constraint:golem.season:0
+#, python-format
+msgid "This season name has already been used."
+msgstr "Ce nom pour la saison a déjà été utilisé. Merci d'en choisir un autre."
+
+#. module: golem_season
+#: code:addons/golem_season/models/golem_season.py:89
 #, python-format
 msgid "You can't delete the default season"
 msgstr "Vous ne pouvez pas supprimer la saison par défaut"
diff --git a/golem_season/i18n/golem_season.pot b/golem_season/i18n/golem_season.pot
index 06f3284..9192a3e 100644
--- a/golem_season/i18n/golem_season.pot
+++ b/golem_season/i18n/golem_season.pot
@@ -6,8 +6,8 @@ msgid ""
 msgstr ""
 "Project-Id-Version: Odoo Server 8.0\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2016-07-11 17:19+0000\n"
-"PO-Revision-Date: 2016-07-11 17:19+0000\n"
+"POT-Creation-Date: 2016-07-13 15:46+0000\n"
+"PO-Revision-Date: 2016-07-13 15:46+0000\n"
 "Last-Translator: <>\n"
 "Language-Team: \n"
 "MIME-Version: 1.0\n"
@@ -31,7 +31,7 @@ msgid "Created on"
 msgstr ""
 
 #. module: golem_season
-#: code:addons/golem_season/models/golem_season.py:53
+#: code:addons/golem_season/models/golem_season.py:55
 #, python-format
 msgid "Current period cannot be included into another existing period."
 msgstr ""
@@ -57,7 +57,7 @@ msgid "Display Name"
 msgstr ""
 
 #. module: golem_season
-#: code:addons/golem_season/models/golem_season.py:49
+#: code:addons/golem_season/models/golem_season.py:51
 #, python-format
 msgid "End of the period is in range of an existing period."
 msgstr ""
@@ -119,19 +119,26 @@ msgid "Season name"
 msgstr ""
 
 #. module: golem_season
-#: code:addons/golem_season/models/golem_season.py:39
+#: code:addons/golem_season/models/golem_season.py:41
 #, python-format
 msgid "Start of the period cannot be after end of the period."
 msgstr ""
 
 #. module: golem_season
-#: code:addons/golem_season/models/golem_season.py:45
+#: code:addons/golem_season/models/golem_season.py:47
 #, python-format
 msgid "Start of the period is in range of an existing period."
 msgstr ""
 
 #. module: golem_season
-#: code:addons/golem_season/models/golem_season.py:75
+#: code:addons/golem_season/models/golem_season.py:27
+#: sql_constraint:golem.season:0
+#, python-format
+msgid "This season name has already been used."
+msgstr ""
+
+#. module: golem_season
+#: code:addons/golem_season/models/golem_season.py:89
 #, python-format
 msgid "You can't delete the default season"
 msgstr ""
diff --git a/golem_season/models/golem_season.py b/golem_season/models/golem_season.py
index 1864a04..9d995bf 100644
--- a/golem_season/models/golem_season.py
+++ b/golem_season/models/golem_season.py
@@ -23,6 +23,8 @@ class GolemSeason(models.Model):
     _name = 'golem.season'
     _description = 'GOLEM Season'
     _order = 'date_start desc'
+    _sql_constraints = [('golem_season_name_uniq', 'UNIQUE (name)',
+                         _('This season name has already been used.'))]
 
     name = fields.Char('Season name')
     member_counter = fields.Integer('Counter for member number generation',