diff --git a/cas_server/migrations/0011_auto_20150523_1731.py b/cas_server/migrations/0011_auto_20150523_1731.py
new file mode 100644
index 0000000..13ca118
--- /dev/null
+++ b/cas_server/migrations/0011_auto_20150523_1731.py
@@ -0,0 +1,18 @@
+# -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+
+from django.db import models, migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('cas_server', '0010_auto_20150518_2139'),
+    ]
+
+    operations = [
+        migrations.AlterUniqueTogether(
+            name='replaceattributname',
+            unique_together=set([('name', 'replace', 'service_pattern')]),
+        ),
+    ]
diff --git a/cas_server/models.py b/cas_server/models.py
index 8b44b17..18693bb 100644
--- a/cas_server/models.py
+++ b/cas_server/models.py
@@ -132,7 +132,7 @@ class Usernames(models.Model):
 
 class ReplaceAttributName(models.Model):
     class Meta:
-        unique_together = ('name', 'service_pattern')
+        unique_together = ('name', 'replace', 'service_pattern')
     name = models.CharField(max_length=255, help_text=u"nom d'un attributs à transmettre au service")
     replace = models.CharField(max_length=255, blank=True, help_text=u"nom sous lequel l'attribut sera présenté au service. vide = inchangé")
     service_pattern = models.ForeignKey(ServicePattern, related_name="attributs")