diff --git a/stages/migrations/0002_corp_name_unique.py b/stages/migrations/0002_corp_name_unique.py
new file mode 100644
index 0000000..1e96c6e
--- /dev/null
+++ b/stages/migrations/0002_corp_name_unique.py
@@ -0,0 +1,119 @@
+# -*- coding: utf-8 -*-
+import datetime
+from south.db import db
+from south.v2 import SchemaMigration
+from django.db import models
+
+
+class Migration(SchemaMigration):
+
+    def forwards(self, orm):
+        # Adding unique constraint on 'Corporation', fields ['name']
+        db.create_unique('stages_corporation', ['name'])
+
+
+    def backwards(self, orm):
+        # Removing unique constraint on 'Corporation', fields ['name']
+        db.delete_unique('stages_corporation', ['name'])
+
+
+    models = {
+        'stages.availability': {
+            'Meta': {'object_name': 'Availability'},
+            'comment': ('django.db.models.fields.TextField', [], {'blank': 'True'}),
+            'corporation': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['stages.Corporation']"}),
+            'domain': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['stages.Domain']"}),
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'period': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['stages.Period']"})
+        },
+        'stages.corpcontact': {
+            'Meta': {'object_name': 'CorpContact'},
+            'corporation': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['stages.Corporation']"}),
+            'email': ('django.db.models.fields.CharField', [], {'max_length': '40', 'blank': 'True'}),
+            'first_name': ('django.db.models.fields.CharField', [], {'max_length': '40', 'blank': 'True'}),
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'is_main': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
+            'last_name': ('django.db.models.fields.CharField', [], {'max_length': '40'}),
+            'role': ('django.db.models.fields.CharField', [], {'max_length': '40'}),
+            'tel': ('django.db.models.fields.CharField', [], {'max_length': '20', 'blank': 'True'}),
+            'title': ('django.db.models.fields.CharField', [], {'max_length': '40', 'blank': 'True'})
+        },
+        'stages.corporation': {
+            'Meta': {'ordering': "(u'name',)", 'object_name': 'Corporation'},
+            'archived': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
+            'city': ('django.db.models.fields.CharField', [], {'max_length': '40'}),
+            'email': ('django.db.models.fields.EmailField', [], {'max_length': '75', 'blank': 'True'}),
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'name': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '100'}),
+            'pcode': ('django.db.models.fields.CharField', [], {'max_length': '4'}),
+            'street': ('django.db.models.fields.CharField', [], {'max_length': '100', 'blank': 'True'}),
+            'tel': ('django.db.models.fields.CharField', [], {'max_length': '20', 'blank': 'True'}),
+            'typ': ('django.db.models.fields.CharField', [], {'max_length': '40', 'blank': 'True'}),
+            'web': ('django.db.models.fields.URLField', [], {'max_length': '200', 'blank': 'True'})
+        },
+        'stages.domain': {
+            'Meta': {'ordering': "(u'name',)", 'object_name': 'Domain'},
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'name': ('django.db.models.fields.CharField', [], {'max_length': '50'})
+        },
+        'stages.klass': {
+            'Meta': {'object_name': 'Klass'},
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'level': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['stages.Level']"}),
+            'name': ('django.db.models.fields.CharField', [], {'max_length': '10'}),
+            'section': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['stages.Section']"})
+        },
+        'stages.level': {
+            'Meta': {'object_name': 'Level'},
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'name': ('django.db.models.fields.CharField', [], {'max_length': '10'})
+        },
+        'stages.period': {
+            'Meta': {'object_name': 'Period'},
+            'end_date': ('django.db.models.fields.DateField', [], {}),
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'level': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['stages.Level']"}),
+            'section': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['stages.Section']"}),
+            'start_date': ('django.db.models.fields.DateField', [], {}),
+            'title': ('django.db.models.fields.CharField', [], {'max_length': '150'})
+        },
+        'stages.referent': {
+            'Meta': {'ordering': "(u'last_name', u'first_name')", 'object_name': 'Referent'},
+            'abrev': ('django.db.models.fields.CharField', [], {'max_length': '10', 'blank': 'True'}),
+            'archived': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
+            'first_name': ('django.db.models.fields.CharField', [], {'max_length': '40'}),
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'last_name': ('django.db.models.fields.CharField', [], {'max_length': '40'})
+        },
+        'stages.section': {
+            'Meta': {'object_name': 'Section'},
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'name': ('django.db.models.fields.CharField', [], {'max_length': '20'})
+        },
+        'stages.student': {
+            'Meta': {'object_name': 'Student'},
+            'archived': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
+            'birth_date': ('django.db.models.fields.DateField', [], {}),
+            'city': ('django.db.models.fields.CharField', [], {'max_length': '40'}),
+            'email': ('django.db.models.fields.EmailField', [], {'max_length': '75', 'blank': 'True'}),
+            'ext_id': ('django.db.models.fields.IntegerField', [], {'unique': 'True', 'null': 'True'}),
+            'first_name': ('django.db.models.fields.CharField', [], {'max_length': '40'}),
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'klass': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['stages.Klass']"}),
+            'last_name': ('django.db.models.fields.CharField', [], {'max_length': '40'}),
+            'mobile': ('django.db.models.fields.CharField', [], {'max_length': '40', 'blank': 'True'}),
+            'pcode': ('django.db.models.fields.CharField', [], {'max_length': '4'}),
+            'street': ('django.db.models.fields.CharField', [], {'max_length': '150', 'blank': 'True'}),
+            'tel': ('django.db.models.fields.CharField', [], {'max_length': '40', 'blank': 'True'})
+        },
+        'stages.training': {
+            'Meta': {'object_name': 'Training'},
+            'availability': ('django.db.models.fields.related.OneToOneField', [], {'to': "orm['stages.Availability']", 'unique': 'True'}),
+            'comment': ('django.db.models.fields.TextField', [], {'blank': 'True'}),
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'referent': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['stages.Referent']", 'null': 'True', 'blank': 'True'}),
+            'student': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['stages.Student']"})
+        }
+    }
+
+    complete_apps = ['stages']
\ No newline at end of file
diff --git a/stages/models.py b/stages/models.py
index 44351c2..b29a8e6 100644
--- a/stages/models.py
+++ b/stages/models.py
@@ -99,7 +99,7 @@ class Referent(models.Model):
 
 
 class Corporation(models.Model):
-    name = models.CharField(max_length=100, verbose_name='Nom')
+    name = models.CharField(max_length=100, verbose_name='Nom', unique=True)
     typ = models.CharField(max_length=40, blank=True, verbose_name='Type de structure')
     street = models.CharField(max_length=100, blank=True, verbose_name='Rue')
     pcode = models.CharField(max_length=4, verbose_name='Code postal')
@@ -123,7 +123,7 @@ class CorpContact(models.Model):
     title = models.CharField(max_length=40, blank=True, verbose_name='Civilité')
     first_name = models.CharField(max_length=40, blank=True, verbose_name='Prénom')
     last_name = models.CharField(max_length=40, verbose_name='Nom')
-    role = models.CharField(max_length=40, verbose_name='Fonction')
+    role = models.CharField(max_length=40, verbose_name='Fonction', blank=True)
     tel = models.CharField(max_length=20, blank=True, verbose_name='Téléphone')
     email = models.CharField(max_length=40, blank=True, verbose_name='Courriel')