diff --git a/netbox/dcim/migrations/0004_interface_mac_address.py b/netbox/dcim/migrations/0004_interface_mac_address.py
deleted file mode 100644
index fd1ac958d..000000000
--- a/netbox/dcim/migrations/0004_interface_mac_address.py
+++ /dev/null
@@ -1,21 +0,0 @@
-# -*- coding: utf-8 -*-
-# Generated by Django 1.9.7 on 2016-07-05 10:01
-from __future__ import unicode_literals
-
-from django.db import migrations, models
-from ..fields import MACAddressField
-
-
-class Migration(migrations.Migration):
-
-    dependencies = [
-        ('dcim', '0003_auto_20160628_1721'),
-    ]
-
-    operations = [
-        migrations.AddField(
-            model_name='interface',
-            name='mac_address',
-            field=MACAddressField(blank=True, null=True, verbose_name=b'MAC Address'),
-        ),
-    ]
diff --git a/netbox/dcim/migrations/0005_auto_20160706_1722.py b/netbox/dcim/migrations/0005_auto_20160706_1722.py
new file mode 100644
index 000000000..83a5cf7cb
--- /dev/null
+++ b/netbox/dcim/migrations/0005_auto_20160706_1722.py
@@ -0,0 +1,26 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.9.7 on 2016-07-06 17:22
+from __future__ import unicode_literals
+
+import dcim.fields
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('dcim', '0004_auto_20160701_2049'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='interface',
+            name='mac_address',
+            field=dcim.fields.MACAddressField(blank=True, null=True, verbose_name=b'MAC Address'),
+        ),
+        migrations.AlterField(
+            model_name='devicetype',
+            name='subdevice_role',
+            field=models.NullBooleanField(choices=[(None, b'None'), (True, b'Parent'), (False, b'Child')], default=None, help_text=b'Parent devices house child devices in device bays. Select "None" if this device type is neither a parent nor a child.', verbose_name=b'Parent/child status'),
+        ),
+    ]