diff --git a/planetstack/openstack_observer/steps/sync_slivers.py b/planetstack/openstack_observer/steps/sync_slivers.py
index 3989c16..9a25c19 100644
--- a/planetstack/openstack_observer/steps/sync_slivers.py
+++ b/planetstack/openstack_observer/steps/sync_slivers.py
@@ -19,6 +19,7 @@
 class SyncSlivers(OpenStackSyncStep):
     provides=[Sliver]
     requested_interval=0
+    observes=Sliver
 
     def get_userdata(self, sliver):
         userdata = 'opencloud:\n   slicename: "%s"\n   hostname: "%s"\n' % (sliver.slice.name, sliver.node.name)