diff --git a/xos/openstack_observer/steps/sync_object.py b/xos/openstack_observer/steps/sync_object.py
index 5e70464..a289c95 100644
--- a/xos/openstack_observer/steps/sync_object.py
+++ b/xos/openstack_observer/steps/sync_object.py
@@ -17,4 +17,4 @@
     observes=[] # Caller fills this in
 
     def sync_record(self, r):
-        raise Exception('Waiting for Service dependency')
+        raise DeferredException('Waiting for Service dependency: %r'%r)