diff --git a/core/api_urls.py b/core/api_urls.py
index cb323dd8..da873ef7 100644
--- a/core/api_urls.py
+++ b/core/api_urls.py
@@ -59,7 +59,10 @@ urlpatterns = [
     path(
         "sitemap.xml",
         sitemap_index,
-        {"sitemaps": sitemaps, "sitemap_url_name": "sitemap-detail"},
+        {
+            "sitemaps": sitemaps,
+            "sitemap_url_name": "core:sitemap-detail",
+        },
         name="sitemap-index",
     ),
     path(