diff --git a/elstat/blueprints/incidents.py b/elstat/blueprints/incidents.py
index 3f3d126..ee7e1aa 100644
--- a/elstat/blueprints/incidents.py
+++ b/elstat/blueprints/incidents.py
@@ -175,8 +175,8 @@ async def patch_incident(request, incident_id):
     incident = request.json
     manager = request.app.manager
 
-    if 'end_timestamp' not in incident and not incident['ongoing']:
-        incident['end_timestamp'] = _time()
+    if 'end_date' not in incident and not incident['ongoing']:
+        incident['end_date'] = _time()
 
     orig = fetch_dict(manager.conn, incident_id)