diff --git a/plstackapi/core/models/sliver.py b/plstackapi/core/models/sliver.py
index 9a3ca81..52420df 100644
--- a/plstackapi/core/models/sliver.py
+++ b/plstackapi/core/models/sliver.py
@@ -20,7 +20,7 @@
     slice = models.ForeignKey(Slice, related_name='slivers')
     node = models.ForeignKey(Node, related_name='slivers')
     deploymentNetwork = models.ForeignKey(DeploymentNetwork, verbose_name='deployment', related_name='sliver_deploymentNetwork')
-    numberCores = models.IntegerField(verbose_name="Number of Cores", help_text="Number of cores for sliver", default=2)
+    numberCores = models.IntegerField(verbose_name="Number of Cores", help_text="Number of cores for sliver", default=0)
 
 
     def __unicode__(self):  return u'%s::%s' % (self.slice, self.deploymentNetwork)