diff --git a/journals/migrations/0046_auto_20181020_2008.py b/journals/migrations/0046_auto_20181020_2008.py
new file mode 100644
index 0000000000000000000000000000000000000000..932cc45a3045e76a2b8f5d62d72392ceeed791d9
--- /dev/null
+++ b/journals/migrations/0046_auto_20181020_2008.py
@@ -0,0 +1,21 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.11.4 on 2018-10-20 18:08
+from __future__ import unicode_literals
+
+from decimal import Decimal
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('journals', '0045_auto_20180927_2055'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='orgpubfraction',
+            name='fraction',
+            field=models.DecimalField(decimal_places=3, default=Decimal('0.000'), max_digits=4),
+        ),
+    ]
diff --git a/journals/models.py b/journals/models.py
index c55706f3d81cf04556cc227814fc72fce71bd86f..aac5e1c57306524caf3861424b96b827a8b123c0 100644
--- a/journals/models.py
+++ b/journals/models.py
@@ -2,6 +2,8 @@ __copyright__ = "Copyright 2016-2018, Stichting SciPost (SciPost Foundation)"
 __license__ = "AGPL v3"
 
 
+from decimal import Decimal
+
 from django.contrib.contenttypes.fields import GenericForeignKey
 from django.contrib.contenttypes.models import ContentType
 from django.contrib.postgres.fields import JSONField
@@ -648,7 +650,7 @@ class OrgPubFraction(models.Model):
                                      related_name='pubfractions', blank=True, null=True)
     publication = models.ForeignKey('journals.Publication', on_delete=models.CASCADE,
                                     related_name='pubfractions')
-    fraction = models.DecimalField(max_digits=4, decimal_places=3)
+    fraction = models.DecimalField(max_digits=4, decimal_places=3, default=Decimal('0.000'))
 
     class Meta:
         unique_together = (('organization', 'publication'),)