diff --git a/topologie/migrations/0024_auto_20170826_1800.py b/topologie/migrations/0024_auto_20170826_1800.py
new file mode 100644
index 00000000..ce108929
--- /dev/null
+++ b/topologie/migrations/0024_auto_20170826_1800.py
@@ -0,0 +1,20 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.10.7 on 2017-08-26 16:00
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('topologie', '0023_auto_20170826_1530'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='port',
+            name='radius',
+            field=models.CharField(choices=[('NO', 'NO'), ('STRICT', 'STRICT'), ('BLOQ', 'BLOQ'), ('COMMON', 'COMMON')], default='NO', max_length=32),
+        ),
+    ]
diff --git a/topologie/models.py b/topologie/models.py
index e64a9e51..f924f6cd 100644
--- a/topologie/models.py
+++ b/topologie/models.py
@@ -58,7 +58,10 @@ class Port(models.Model):
             ('BLOQ', 'BLOQ'),
             ('COMMON', 'COMMON'),
             )
-    STATES = STATES_BASE + tuple([(str(id), str(id)) for id in list(Vlan.objects.values_list('vlan_id', flat=True).order_by('vlan_id'))])
+    try:
+        STATES = STATES_BASE + tuple([(str(id), str(id)) for id in list(Vlan.objects.values_list('vlan_id', flat=True).order_by('vlan_id'))])
+    except:
+        STATES = STATES_BASE 
 
     switch = models.ForeignKey('Switch', related_name="ports")
     port = models.IntegerField()