diff --git a/backend/src/routes/rooms.js b/backend/src/routes/rooms.js
index 1477329..a2db666 100644
--- a/backend/src/routes/rooms.js
+++ b/backend/src/routes/rooms.js
@@ -180,7 +180,7 @@ export async function roomRoutes(app) {
     // Classify each site
     const rooms = []
     for (const site of sites) {
-      const catId = String(site.site_category_id || '')
+      const catId = String(site.site_category_id ?? site.category_id ?? site.category?.id ?? '')
       const isExcluded = excludedCategories.includes(catId)
       if (isExcluded && hideExcluded) continue