diff --git a/elstat/manager.py b/elstat/manager.py
index 30adadc..e9946ab 100644
--- a/elstat/manager.py
+++ b/elstat/manager.py
@@ -176,6 +176,7 @@ class ServiceManager:
         def _send(websocket):
             return self._ws_send(websocket, {
                 'op': op,
+                'c': 'incidents',
                 'd': data,
             })