diff --git a/umap/tests/test_views.py b/umap/tests/test_views.py
index 08c4586b..1fced968 100644
--- a/umap/tests/test_views.py
+++ b/umap/tests/test_views.py
@@ -364,3 +364,29 @@ def test_user_profile_does_not_allow_to_edit_other_fields(client, map):
     user = User.objects.get(pk=map.owner.pk)
     assert user.email != new_email
     assert user.is_superuser is False
+
+
+def test_favicon_redirection(client):
+    response = client.get("/favicon.ico")
+    assert response.status_code == 302
+    assert response.url == "/static/umap/favicons/favicon.ico"
+
+
+def test_webmanifest(client):
+    response = client.get("/manifest.webmanifest")
+    assert response.status_code == 200
+    assert response["content-type"] == "application/json"
+    assert response.json() == {
+        "icons": [
+            {
+                "sizes": "192x192",
+                "src": "/static/umap/favicons/icon-192.png",
+                "type": "image/png",
+            },
+            {
+                "sizes": "512x512",
+                "src": "/static/umap/favicons/icon-512.png",
+                "type": "image/png",
+            },
+        ]
+    }
diff --git a/umap/views.py b/umap/views.py
index 6ac0d6a3..824baf4e 100644
--- a/umap/views.py
+++ b/umap/views.py
@@ -422,7 +422,7 @@ def _urls_for_js(urls=None):
 
 
 def simple_json_response(**kwargs):
-    return HttpResponse(json.dumps(kwargs))
+    return HttpResponse(json.dumps(kwargs), content_type="application/json")
 
 
 # ############## #