diff --git a/planetstack/core/models/site.py b/planetstack/core/models/site.py
index d1f04dd..449a72b 100644
--- a/planetstack/core/models/site.py
+++ b/planetstack/core/models/site.py
@@ -252,6 +252,8 @@
     admin_password = models.CharField(max_length=200, null=True, blank=True, help_text="Password of theadmin user at this controller")
     admin_tenant = models.CharField(max_length=200, null=True, blank=True, help_text="Name of the tenant the admin user belongs to")
     domain = models.CharField(max_length=200, null=True, blank=True, help_text="Name of the domain this controller belongs to")
+    deployment = models.ForeignKey(Deployment,related_name='controllerdeployments')
+    
 
     def __unicode__(self):  return u'%s %s %s' % (self.name, self.backend_type, self.version)