diff --git a/umap/templates/umap/js.html b/umap/templates/umap/js.html
index 5ef342ab..62df6bab 100644
--- a/umap/templates/umap/js.html
+++ b/umap/templates/umap/js.html
@@ -28,7 +28,7 @@
 <script src="{% static 'umap/vendors/colorbrewer/colorbrewer.js' %}" defer></script>
 <script src="{% static 'umap/vendors/simple-statistics/simple-statistics.min.js' %}" defer></script>
 {% if locale %}
-    {% with 'umap/locale/'|add:locale|add:'.js' as path %}
+    {% with "umap/locale/"|add:locale|add:".js" as path %}
         <script src="{% static path %}" defer></script>
     {% endwith %}
 {% endif %}
diff --git a/umap/tests/integration/test_statics.py b/umap/tests/integration/test_statics.py
new file mode 100644
index 00000000..657609b1
--- /dev/null
+++ b/umap/tests/integration/test_statics.py
@@ -0,0 +1,43 @@
+import re
+import shutil
+import tempfile
+
+import pytest
+from django.core.management import call_command
+from django.utils.translation import override
+from playwright.sync_api import expect
+
+
+@pytest.fixture
+def staticfiles(settings):
+    static_root = tempfile.mkdtemp(prefix="test_static")
+    settings.STATIC_ROOT = static_root
+    try:
+        call_command("collectstatic", "--noinput")
+        yield
+    finally:
+        shutil.rmtree(static_root)
+
+
+def test_javascript_have_been_loaded(
+    map, live_server, datalayer, page, settings, staticfiles
+):
+    settings.STORAGES["staticfiles"][
+        "BACKEND"
+    ] = "umap.utils.UmapManifestStaticFilesStorage"
+    datalayer.settings["displayOnLoad"] = False
+    datalayer.save()
+    map.settings["properties"]["defaultView"] = "latest"
+    map.save()
+    with override("fr"):
+        url = f"{live_server.url}{map.get_absolute_url()}"
+        assert "/fr/" in url
+        page.goto(url)
+    # Hash is defined, so map is initialized
+    expect(page).to_have_url(re.compile(r".*#7/48\..+/13\..+"))
+    expect(page).to_have_url(re.compile(r".*/fr/"))
+    # Should be in French, so hashed locale file has been loaded correctly
+    button = page.get_by_text("Voir les calques")
+    expect(button).to_be_visible()
+    layers = page.locator(".umap-browse-datalayers li")
+    expect(layers).to_have_count(1)
diff --git a/umap/tests/settings.py b/umap/tests/settings.py
index e1105fa9..c79521f0 100644
--- a/umap/tests/settings.py
+++ b/umap/tests/settings.py
@@ -5,6 +5,9 @@ from umap.settings.base import *  # pylint: disable=W0614,W0401
 SECRET_KEY = "justfortests"
 FROM_EMAIL = "test@test.org"
 EMAIL_BACKEND = "django.core.mail.backends.locmem.EmailBackend"
+STORAGES["staticfiles"][
+    "BACKEND"
+] = "django.contrib.staticfiles.storage.StaticFilesStorage"
 
 if os.environ.get("GITHUB_ACTIONS", False) == "true":
     DATABASES = {