diff --git a/HISTORY.rst b/HISTORY.rst
index 9721b4f..b2cfb9a 100644
--- a/HISTORY.rst
+++ b/HISTORY.rst
@@ -3,6 +3,11 @@
 History
 -------
 
+0.6.4 (unreleased)
+++++++++++++++++++
+
+* Make categories non required
+
 0.6.3 (2015-12-22)
 ++++++++++++++++++
 
diff --git a/djangocms_blog/migrations/0013_auto_20160201_2235.py b/djangocms_blog/migrations/0013_auto_20160201_2235.py
new file mode 100644
index 0000000..ffdafe1
--- /dev/null
+++ b/djangocms_blog/migrations/0013_auto_20160201_2235.py
@@ -0,0 +1,20 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.9.2 on 2016-02-01 21:35
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('djangocms_blog', '0012_auto_20151220_1734'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='post',
+            name='categories',
+            field=models.ManyToManyField(blank=True, related_name='blog_posts', to='djangocms_blog.BlogCategory', verbose_name='category'),
+        ),
+    ]
diff --git a/djangocms_blog/models.py b/djangocms_blog/models.py
index c65ce8e..e0fa27e 100644
--- a/djangocms_blog/models.py
+++ b/djangocms_blog/models.py
@@ -100,7 +100,7 @@ class Post(ModelMeta, TranslatableModel):
                                               blank=True)
     publish = models.BooleanField(_('publish'), default=False)
     categories = models.ManyToManyField('djangocms_blog.BlogCategory', verbose_name=_('category'),
-                                        related_name='blog_posts',)
+                                        related_name='blog_posts', blank=True)
     main_image = FilerImageField(verbose_name=_('main image'), blank=True, null=True,
                                  on_delete=models.SET_NULL,
                                  related_name='djangocms_blog_post_image')