diff --git a/machines/admin.py b/machines/admin.py
index 1eddaa38..1e571ff7 100644
--- a/machines/admin.py
+++ b/machines/admin.py
@@ -20,7 +20,7 @@ class MxAdmin(VersionAdmin):
     list_display = ('zone', 'priority', 'name')
 
 class NsAdmin(VersionAdmin):
-    list_display = ('zone', 'interface')
+    list_display = ('zone', 'ns')
 
 class IpListAdmin(VersionAdmin):
     list_display = ('ipv4','ip_type')
diff --git a/machines/forms.py b/machines/forms.py
index 4b65c609..a0a34c75 100644
--- a/machines/forms.py
+++ b/machines/forms.py
@@ -152,11 +152,11 @@ class DelMxForm(ModelForm):
 class NsForm(ModelForm):
     class Meta:
         model = Ns
-        fields = ['zone', 'interface']
+        fields = ['zone', 'ns']
 
 class DelNsForm(ModelForm):
     ns = forms.ModelMultipleChoiceField(queryset=Ns.objects.all(), label="Enregistrements NS actuels",  widget=forms.CheckboxSelectMultiple)
 
     class Meta:
-        exclude = ['zone', 'interface']
+        exclude = ['zone', 'ns']
         model = Ns
diff --git a/machines/migrations/0041_remove_ns_interface.py b/machines/migrations/0041_remove_ns_interface.py
new file mode 100644
index 00000000..88ea6985
--- /dev/null
+++ b/machines/migrations/0041_remove_ns_interface.py
@@ -0,0 +1,18 @@
+# -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('machines', '0040_remove_interface_dns'),
+    ]
+
+    operations = [
+        migrations.RemoveField(
+            model_name='ns',
+            name='interface',
+        ),
+    ]
diff --git a/machines/migrations/0042_ns_ns.py b/machines/migrations/0042_ns_ns.py
new file mode 100644
index 00000000..2f0dd3f7
--- /dev/null
+++ b/machines/migrations/0042_ns_ns.py
@@ -0,0 +1,21 @@
+# -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('machines', '0041_remove_ns_interface'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='ns',
+            name='ns',
+            field=models.OneToOneField(to='machines.Domain', default=1, on_delete=django.db.models.deletion.PROTECT),
+            preserve_default=False,
+        ),
+    ]
diff --git a/machines/models.py b/machines/models.py
index 315627f7..6527f088 100644
--- a/machines/models.py
+++ b/machines/models.py
@@ -64,10 +64,10 @@ class Ns(models.Model):
     PRETTY_NAME = "Enregistrements NS"
 
     zone = models.ForeignKey('Extension', on_delete=models.PROTECT)
-    interface = models.OneToOneField('Interface', on_delete=models.PROTECT)
+    ns = models.OneToOneField('Domain', on_delete=models.PROTECT)
 
     def __str__(self):
-        return str(self.zone) + ' ' + str(self.interface)
+        return str(self.zone) + ' ' + str(self.ns)
 
 class Interface(models.Model):
     PRETTY_NAME = "Interface"
diff --git a/machines/serializers.py b/machines/serializers.py
index dcc3649a..dc2e7629 100644
--- a/machines/serializers.py
+++ b/machines/serializers.py
@@ -67,17 +67,17 @@ class MxSerializer(serializers.ModelSerializer):
 
 class NsSerializer(serializers.ModelSerializer):
     zone = serializers.SerializerMethodField('get_zone_name')
-    interface = serializers.SerializerMethodField('get_interface_name')
+    ns = serializers.SerializerMethodField('get_interface_name')
 
     class Meta:
         model = Ns
-        fields = ('zone', 'interface')
+        fields = ('zone', 'ns')
 
     def get_zone_name(self, obj):
         return obj.zone.name
 
     def get_interface_name(self, obj):
-        return obj.interface
+        return obj.ns
 
 class DomainSerializer(serializers.ModelSerializer):
     extension = serializers.SerializerMethodField('get_zone_name')
diff --git a/machines/templates/machines/aff_ns.html b/machines/templates/machines/aff_ns.html
index 56ba3b3e..678cc765 100644
--- a/machines/templates/machines/aff_ns.html
+++ b/machines/templates/machines/aff_ns.html
@@ -10,7 +10,7 @@
         {% for ns in ns_list %}
         <tr>
             <td>{{ ns.zone }}</td>
-	    <td>{{ ns.interface }}</td>
+	    <td>{{ ns.ns }}</td>
             <td class="text-right">
             {% if is_infra %}
             {% include 'buttons/edit.html' with href='machines:edit-ns' id=ns.id %}
diff --git a/machines/views.py b/machines/views.py
index 9d86dab1..b7a36615 100644
--- a/machines/views.py
+++ b/machines/views.py
@@ -730,7 +730,7 @@ def mx(request):
 @login_required
 @permission_required('serveur')
 def ns(request):
-    ns = Ns.objects.filter(interface__in=Interface.objects.exclude(ipv4=None))
+    ns = Ns.objects.exclude(ns__in=Domain.objects.filter(interface_parent__in=Interface.objects.filter(ipv4=None)))
     seria = NsSerializer(ns, many=True)
     return JSONResponse(seria.data)