diff --git a/addons/web/controllers/main.py b/addons/web/controllers/main.py
index 5641d991397..846b9099555 100644
--- a/addons/web/controllers/main.py
+++ b/addons/web/controllers/main.py
@@ -1676,13 +1676,15 @@ class Reports(http.Controller):
         context.update(action["context"])
 
         report_data = {}
-        report_ids = context["active_ids"]
+        report_ids = context.get("active_ids", None)
         if 'report_type' in action:
             report_data['report_type'] = action['report_type']
         if 'datas' in action:
             if 'ids' in action['datas']:
                 report_ids = action['datas'].pop('ids')
             report_data.update(action['datas'])
+        if not report_ids:
+            raise ValueError("action['datas']['ids'] and context['active_ids'] are undefined")
 
         report_id = report_srv.report(
             request.session._db, request.session._uid, request.session._password,