diff --git a/products/views.py b/products/views.py
index 21ddd1b..bf67980 100644
--- a/products/views.py
+++ b/products/views.py
@@ -188,7 +188,7 @@ def product_search(request):
                     cat = CategoryTag.objects.filter(label__iexact=entry).first()
                     # append category tag, and children
                     descendants.append(cat)
-                    descendants.extend(cat.children.all())
+                    descendants.extend(cat.get_descendants())
 
                 products_qs = products_qs.filter(category__in=descendants)
             # filter by tags