diff --git a/planetstack/openstack_observer/steps/sync_network_slivers.py b/planetstack/openstack_observer/steps/sync_network_slivers.py
index 11a343b..7406fb2 100644
--- a/planetstack/openstack_observer/steps/sync_network_slivers.py
+++ b/planetstack/openstack_observer/steps/sync_network_slivers.py
@@ -12,6 +12,7 @@
 class SyncNetworkSlivers(OpenStackSyncStep):
     requested_interval = 0 # 3600
     provides=[NetworkSliver]
+    observes=NetworkSliver
 
     #     The way it works is to enumerate the all of the ports that quantum
     #     has, and then work backward from each port's network-id to determine