diff --git a/ietf/meeting/helpers.py b/ietf/meeting/helpers.py
index 4fd4579c980..6fca92ec6c2 100644
--- a/ietf/meeting/helpers.py
+++ b/ietf/meeting/helpers.py
@@ -95,6 +95,7 @@ def preprocess_assignments_for_agenda(assignments_queryset, meeting, extra_prefe
       a.session.historic_parent
       a.session.rescheduled_to (if rescheduled)
       a.session.prefetched_active_materials
+      a.session.order_number
     """
     assignments_queryset = assignments_queryset.prefetch_related(
             'timeslot', 'timeslot__type', 'timeslot__meeting',
diff --git a/ietf/meeting/views.py b/ietf/meeting/views.py
index a50ba1ad939..1155e138b1f 100644
--- a/ietf/meeting/views.py
+++ b/ietf/meeting/views.py
@@ -1621,6 +1621,8 @@ def api_get_agenda_data (request, num=None):
     # Get Floor Plans
     floors = FloorPlan.objects.filter(meeting=meeting).order_by('order')
 
+    #debug.show('all([(item.acronym,item.session.order_number,item.session.order_in_meeting()) for item in filtered_assignments])')
+
     return JsonResponse({
         "meeting": {
             "number": schedule.meeting.number,
@@ -1712,7 +1714,7 @@ def agenda_extract_schedule (item):
         } if item.session.agenda() is not None else {
             "url": None
         },
-        "orderInMeeting": item.session.order_in_meeting(),
+        "orderInMeeting": item.session.order_number,
         "short": item.session.short if item.session.short else item.session.short_name,
         "sessionToken": item.session.docname_token_only_for_multiple(),
         "links": {