diff --git a/evennia/comms/migrations/0010_auto_20161206_1912.py b/evennia/comms/migrations/0010_auto_20161206_1912.py
new file mode 100644
index 0000000000..4da49b8447
--- /dev/null
+++ b/evennia/comms/migrations/0010_auto_20161206_1912.py
@@ -0,0 +1,26 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.9.11 on 2016-12-06 19:12
+from __future__ import unicode_literals
+
+from django.conf import settings
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('comms', '0009_auto_20160921_1731'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='channeldb',
+            name='db_object_subscriptions',
+            field=models.ManyToManyField(blank=True, db_index=True, null=True, related_name='object_subscription_set', to='objects.ObjectDB', verbose_name=b'subscriptions'),
+        ),
+        migrations.AlterField(
+            model_name='channeldb',
+            name='db_subscriptions',
+            field=models.ManyToManyField(blank=True, db_index=True, null=True, related_name='subscription_set', to=settings.AUTH_USER_MODEL, verbose_name=b'subscriptions'),
+        ),
+    ]
diff --git a/evennia/comms/models.py b/evennia/comms/models.py
index 306766f7cf..ce5f3d739c 100644
--- a/evennia/comms/models.py
+++ b/evennia/comms/models.py
@@ -562,10 +562,10 @@ class ChannelDB(TypedObject):
 
     """
     db_subscriptions = models.ManyToManyField("players.PlayerDB",
-                       related_name="subscription_set", null=True, verbose_name='subscriptions', db_index=True)
+                       related_name="subscription_set", null=True, blank=True, verbose_name='subscriptions', db_index=True)
 
     db_object_subscriptions = models.ManyToManyField("objects.ObjectDB",
-                       related_name="object_subscription_set", null=True, verbose_name='subscriptions', db_index=True)
+                       related_name="object_subscription_set", null=True, blank=True, verbose_name='subscriptions', db_index=True)
 
     # Database manager
     objects = managers.ChannelDBManager()