diff --git a/docker/docker-compose.dev.yml b/docker/docker-compose.dev.yml
index 55497bae7..d5c12734d 100644
--- a/docker/docker-compose.dev.yml
+++ b/docker/docker-compose.dev.yml
@@ -6,6 +6,7 @@ services:
       - postgres
     env_file: services.env
     environment:
+      - DATASTORE_ENABLE_DEV_ENVIRONMENT=1
       - NUM_WORKERS=8
     volumes:
       - ../openslides-datastore-service/shared/shared:/app/shared
diff --git a/docs/example-data.json b/docs/example-data.json
index 9eae2317e..c5e0cfbbc 100644
--- a/docs/example-data.json
+++ b/docs/example-data.json
@@ -302,7 +302,7 @@
         "projector_countdown_ids": [1],
         "tag_ids": [1, 2, 3],
         "agenda_item_ids": [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15],
-        "list_of_speakers_ids": [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15],
+        "list_of_speakers_ids": [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18],
         "topic_ids": [1, 2, 3, 4, 5, 6, 7, 8],
         "group_ids": [1, 2, 3, 5, 6],
         "mediafile_ids": [1, 2, 3],
@@ -957,6 +957,36 @@
         "projection_ids": [],
         "current_projector_ids": [],
         "meeting_id": 1
+    },
+    {
+        "id": 16,
+        "closed": false,
+
+        "content_object_id": "mediafile/1",
+        "speaker_ids": [],
+        "projection_ids": [],
+        "current_projector_ids": [],
+        "meeting_id": 1
+    },
+    {
+        "id": 17,
+        "closed": false,
+
+        "content_object_id": "mediafile/2",
+        "speaker_ids": [],
+        "projection_ids": [],
+        "current_projector_ids": [],
+        "meeting_id": 1
+    },
+    {
+        "id": 18,
+        "closed": false,
+
+        "content_object_id": "mediafile/3",
+        "speaker_ids": [],
+        "projection_ids": [],
+        "current_projector_ids": [],
+        "meeting_id": 1
     }],
 "speaker": [
     {