diff --git a/src/backend/InvenTree/part/serializers.py b/src/backend/InvenTree/part/serializers.py
index 928759d186..57244acf3f 100644
--- a/src/backend/InvenTree/part/serializers.py
+++ b/src/backend/InvenTree/part/serializers.py
@@ -192,6 +192,7 @@ class CategoryTree(InvenTree.serializers.InvenTreeModelSerializer):
             'pk',
             'name',
             'description',
+            'pathstring',
             'parent',
             'tree_id',
             'level',