1 files changed, 1 insertions, 2 deletions
diff --git a/web-server/opendc/api/v2/simulations/simulationId/topologies/endpoint.py b/web-server/opendc/api/v2/simulations/simulationId/topologies/endpoint.py
index ab7b7006..952959ca 100644
--- a/web-server/opendc/api/v2/simulations/simulationId/topologies/endpoint.py
+++ b/web-server/opendc/api/v2/simulations/simulationId/topologies/endpoint.py
@@ -2,7 +2,6 @@ from datetime import datetime
 
 from opendc.models.simulation import Simulation
 from opendc.models.topology import Topology
-from opendc.util import exceptions
 from opendc.util.rest import Response
 from opendc.util.database import Database
 
@@ -22,7 +21,7 @@ def POST(request):
     topology.set_property('datetimeLastEdited', Database.datetime_to_string(datetime.now()))
     topology.insert()
 
-    simulation.obj['topologyIds'].append(topology.obj['_id'])
+    simulation.obj['topologyIds'].append(topology.get_id())
     simulation.set_property('datetimeLastEdited', Database.datetime_to_string(datetime.now()))
     simulation.update()