diff --git a/src/config/svc-monitor/svc_monitor/config_db.py b/src/config/svc-monitor/svc_monitor/config_db.py
index 4490e2a03e2..c2ffe054274 100644
--- a/src/config/svc-monitor/svc_monitor/config_db.py
+++ b/src/config/svc-monitor/svc_monitor/config_db.py
@@ -653,7 +653,7 @@ def delete(cls, uuid):
         if uuid not in cls._dict:
             return
         obj = cls._dict[uuid]
-        self.update_multiple_refs('service_instance', {})
+        obj.update_multiple_refs('service_instance', {})
         del cls._dict[uuid]
     # end delete
 # end ProjectSM
@@ -846,7 +846,7 @@ def delete(cls, uuid):
         cls._manager.snat_agent.delete_snat_instance(obj)
         obj.update_single_ref('service_instance', {})
         obj.update_single_ref('virtual_network', {})
-        self.update_multiple_refs('virtual_machine_interface', {})
+        obj.update_multiple_refs('virtual_machine_interface', {})
         del cls._dict[uuid]
     # end delete
 # end LogicalRouterSM