diff --git a/umap/tests/test_map_views.py b/umap/tests/test_map_views.py
index 8f0ccae3..c99183b8 100644
--- a/umap/tests/test_map_views.py
+++ b/umap/tests/test_map_views.py
@@ -775,6 +775,15 @@ def test_oembed_no_url_map(client, map, datalayer):
     assert response.status_code == 404
 
 
+def test_oembed_unknown_url_map(client, map, datalayer):
+    map_url = f"http://testserver{map.get_absolute_url()}"
+    # We change to an unknown id prefix to keep URL structure.
+    map_url = map_url.replace("map_", "_111")
+    url = f"{reverse('map_oembed')}?url={map_url}"
+    response = client.get(url)
+    assert response.status_code == 404
+
+
 def test_oembed_wrong_format_map(client, map, datalayer):
     url = (
         f"{reverse('map_oembed')}"
diff --git a/umap/views.py b/umap/views.py
index 467cb36c..dc2e16bc 100644
--- a/umap/views.py
+++ b/umap/views.py
@@ -695,7 +695,7 @@ class MapOEmbed(View):
         if "slug" not in kwargs or "map_id" not in kwargs:
             raise Http404("Invalid URL path.")
 
-        map_ = Map.objects.get(id=kwargs["map_id"], slug=kwargs["slug"])
+        map_ = get_object_or_404(Map, id=kwargs["map_id"])
 
         if map_.share_status != Map.PUBLIC:
             raise PermissionDenied("This map is not public.")