diff --git a/passerelle_imio_liege_rn/migrations/0001_initial.py b/passerelle_imio_liege_rn/migrations/0001_initial.py
index e8471ce..2ed9bfd 100644
--- a/passerelle_imio_liege_rn/migrations/0001_initial.py
+++ b/passerelle_imio_liege_rn/migrations/0001_initial.py
@@ -16,7 +16,7 @@ class Migration(migrations.Migration):
             fields=[
                 ('id', models.AutoField(verbose_name='ID', serialize=False, auto_created=True, primary_key=True)),
                 ('title', models.CharField(max_length=50, verbose_name='Title')),
-                ('slug', models.SlugField(verbose_name='Identifier', db_index=False)),
+                ('slug', models.SlugField(verbose_name='Identifier', unique=True)),
                 ('description', models.TextField(verbose_name='Description')),
                 ('log_level', models.CharField(default=b'INFO', max_length=10, verbose_name='Log Level', choices=[(b'NOTSET', b'NOTSET'), (b'DEBUG', b'DEBUG'), (b'INFO', b'INFO'), (b'WARNING', b'WARNING'), (b'ERROR', b'ERROR'), (b'CRITICAL', b'CRITICAL'), (b'FATAL', b'FATAL')])),
                 ('service_url', models.CharField(help_text='Gateway Web Service URL', max_length=128, verbose_name='Service URL')),
diff --git a/passerelle_imio_liege_rn/migrations/0002_auto_20180111_0850.py b/passerelle_imio_liege_rn/migrations/0002_auto_20180111_0850.py
new file mode 100644
index 0000000..871c833
--- /dev/null
+++ b/passerelle_imio_liege_rn/migrations/0002_auto_20180111_0850.py
@@ -0,0 +1,19 @@
+# -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('passerelle_imio_liege_rn', '0001_initial'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='imioliegern',
+            name='slug',
+            field=models.SlugField(unique=True),
+        ),
+    ]