diff --git a/apps/news/serializers.py b/apps/news/serializers.py
index 791879ca..e7d2e6d3 100644
--- a/apps/news/serializers.py
+++ b/apps/news/serializers.py
@@ -251,11 +251,14 @@ class NewsBackOfficeBaseSerializer(NewsBaseSerializer):
             user = request.user
             validated_data['created_by'] = user
 
-        agenda_data = validated_data.pop('agenda')
-        agenda_data['address_id'] = agenda_data.pop('address').pk
-        agenda_serializer = AgendaSerializer(data=agenda_data)
-        agenda_serializer.is_valid(raise_exception=True)
-        agenda = agenda_serializer.save()
+        agenda_data = validated_data.get('agenda')
+        agenda = None
+
+        if agenda_data is not None:
+            agenda_data['address_id'] = agenda_data.pop('address').pk
+            agenda_serializer = AgendaSerializer(data=agenda_data)
+            agenda_serializer.is_valid(raise_exception=True)
+            agenda = agenda_serializer.save()
 
         instance = super().create(validated_data)
         instance.agenda = agenda
@@ -276,13 +279,13 @@ class NewsBackOfficeBaseSerializer(NewsBaseSerializer):
         agenda_data = validated_data.get('agenda')
         agenda = instance.agenda
 
-        if agenda is None:
+        if agenda is None and agenda_data is not None:
             agenda_data['address_id'] = agenda_data.pop('address').pk
             agenda_serializer = AgendaSerializer(data=agenda_data)
             agenda_serializer.is_valid(raise_exception=True)
             agenda_serializer.save()
 
-        else:
+        elif agenda_data is not None:
             agenda.start_datetime = agenda_data.pop(
                 'start_datetime') if 'start_datetime' in agenda_data else agenda.start_datetime
             agenda.end_datetime = agenda_data.pop(